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<RECORD 1>

 

Accession number:20131116105448

Title:RF power amplifier design applied to acoustic optical modulator

Authors:Hu, Wenjie (1); Luo, Xiujuan (1); Cui, Dongzi (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (2) HONG FENG Mechanical Factory, China Aerospace Science and Industry Corporation Fourth Research Institute, Xiao'gan 432000, Hubei, China

Corresponding author:Hu, W.(huwenjieawp@126.com)

Source title:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Abbreviated source title:IEEE Int. Conf. Adv. Comput. Intell., ICACI

Monograph title:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Issue date:2012

Publication year:2012

Pages:1044-1048

Article number:6463331

Language:English

ISBN-13:9781467317436

Document type:Conference article (CA)

Conference name:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Conference date:October 18, 2012 - October 20, 2012

Conference location:Nanjing, China

Conference code:95872

Sponsor:IEEE Nanjing Section

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:This paper proposes a novel procedure of designing a power amplifier with broadband and high linearity, which is applied to acoustic optical modulator. Firstly, a transistor should be suitably chosen, here we accomplish the direct current (DC) simulation in order to get the right quiescent operating point under the platform Advanced Design System 2009 (ADS). Then some stability simulations and measurements were taken to make sure that the amplifier can be unconditionally stable. Finally, we carried out the load pull and source pull simulations to obtain the load and source impedances required, while executing the Harmonic Balance (HB) simulations to verify our design. &copy; 2012 IEEE.

Number of references:8

Main heading:Design

Controlled terms:Acoustic impedance - Artificial intelligence - Light modulators - Power amplifiers

Uncontrolled terms:Acoustic-optical modulators - Advanced design system - Direct current - Harmonic balance simulations - High linearity - Load pull - Operating points - RF power amplifiers - Source impedance - Source-pull  - Stability simulation - Unconditionally stable

Classification code:408 Structural Design - 713.1 Amplifiers - 723.4 Artificial Intelligence - 741.3 Optical Devices and Systems - 751.2 Acoustic Properties of Materials

DOI:10.1109/ICACI.2012.6463331

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 2>

 

Accession number:20122215062371

Title:Intense red upconversion emission of Yb/Tm/Ho triply-doped tellurite glasses

Authors:Zhan, Huan (1); Zhou, Zhiguang (1); He, Jianli (1); Lin, Aoxiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Graduate School, Chinese Academy of Sciences (CAS), Beijing 100049, China

Corresponding author:Lin, A.(aoxiang@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:15

Issue date:May 20, 2012

Publication year:2012

Pages:3091-3095

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:By conventional melting and quenching methods, 3Yb<inf>2</inf>O <inf>3</inf>-0.2Tm<inf>2</inf>O<inf>3</inf>-xHo<inf>2</inf>O<inf>3</inf> (wt%, x = 0.2 &sim; 1.2) was doped into an easily fiberized tellurite glass with composition of 78TeO<inf>2</inf>-10ZnO-12Na<inf>2</inf>O (mol%) to form YTH-TZN78 glasses. Under 976 nm excitation, the direct sensitizing effect of Yb ions (Yb &rarr; Ho) and indirect sensitizing and self-depopulating effects of Tm ions (Yb &rarr; Tm &rarr; Ho) were found to present intense red upconversion emission at 657 nm (Red, Ho: <sup>5</sup>F<inf>5</inf> &rarr; <sup>5</sup>I <inf>8</inf>) and were responsible for the absence of the usually observed 484 nm emission (Blue, Tm:<sup>1</sup>G<inf>4</inf> &rarr; <sup>3</sup>H <inf>6</inf>). Regardless of the dopant concentration of Ho ions, the intensity of the red emission at 657 nm (Red, Ho: <sup>5</sup>F<inf>5</inf> &rarr; <sup>5</sup>I<inf>8</inf>) is about three times stronger than that of the green one at 543 nm (Green, Ho:<sup>5</sup>S<inf>2</inf> &rarr; <sup>5</sup>I <inf>8</inf>). For this certain red emission at 657 nm, 0.4 wt% Ho <inf>2</inf>O<inf>3</inf>-doped YTH-TZN78 glass was found to present the highest emission intensity and is therefore determined as a promising active tellurite glass for red fiber laser development. &copy; 2012 Optical Society of America.

Number of references:22

Main heading:Glass

Controlled terms:Fiber lasers - Ions - Tellurium compounds - Ytterbium - Zinc oxide

Uncontrolled terms:Dopant concentrations - Emission intensity - Red emissions - Sensitizing effects - Tellurite glass - Up-conversion emission

Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 801 Chemistry - 804.2 Inorganic Compounds - 812.3 Glass

DOI:10.1364/AO.51.003091

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 3>

 

Accession number:20121214886658

Title:High precision nonlinear FDD design using RBF with the ability to learn

Authors:Wang, Zheng (1); Li, Yanjun (1); Sun, Xiaowei (2)

Author affiliation:(1) School of Astronautics, Northwestern Polytechnical University, Xi'an 710068, China; (2) Xi'an Institute of Applied Optics, Xi'an 710065, China

Corresponding author:Wang, Z.

Source title:Zhongguo Kongjian Kexue Jishu/Chinese Space Science and Technology

Abbreviated source title:Zhongguo Kongjian Kexue Jishu

Volume:32

Issue:1

Issue date:February 2012

Publication year:2012

Pages:27-35

Language:Chinese

ISSN:1000758X

CODEN:ZKKJEK

Document type:Journal article (JA)

Publisher:Chinese Academy of Space Technology, P.O. Box 9622, Bejing, 100086, China

Abstract:On-orbit spacecraft fault detection and diagnosis(FDD) problem nonlinear model always needs to deal with. It's also important to improve the accuracy of the methodology as far as possible. Radial basis function(RBF) neural network was firstly applied for compensation of modeling error in order to increase the accuracy of the scheme, a Lyapunov function was used to prove its property. The residual and threshold and fault detection time were got through nonlinear observer. Fault signal was reconstructed by using RBF network, and accordingly a learning FDD strategy was presented. Validations were respectively designed for characteristics of residual threshold, detection time and the ability of RBF for reconstruction. The simulation results show the effectiveness of the proposed algorithm.

Number of references:12

Main heading:Radial basis function networks

Controlled terms:Algorithms - Computer simulation - Error compensation - Lyapunov functions - Spacecraft

Uncontrolled terms:Detection time - Fault detection and diagnosis - Fault signal - High precision - Modeling errors - Non-linear model - Non-linear observer - On-orbit spacecrafts - Radial basis function neural networks - Simulation

Classification code:655.1 Spacecraft, General - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 921 Mathematics

DOI:10.3780/j.issn.1000-758X.2012.01.005

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122815227441

Title:Video super-resolution with 3D adaptive normalized convolution

Authors:Zhang, Kaibing (1); Mu, Guangwu (1); Yuan, Yuan (2); Gao, Xinbo (1); Tao, Dacheng (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Centre for Quantum Computation and Intelligent Systems, The Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:94

Issue date:October 1, 2012

Publication year:2012

Pages:140-151

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The classic multi-image-based super-resolution (SR) methods typically take global motion pattern to produce one or multiple high-resolution (HR) versions from a set of low-resolution (LR) images. However, due to the influence of aliasing and noise, it is difficult to obtain highly accurate registration with sub-pixel accuracy. Moreover, in practical applications, the global motion pattern is rarely found in the real LR inputs. In this paper, to surmount or at least reduce the aforementioned problems, we develop a novel SR framework for video sequence by extending the traditional 2-dimentional (2D) normalized convolution (NC) to 3-dimentional (3D) case. In the proposed framework, to bypass explicit motion estimation, we estimate a target pixel by taking a weighted average of pixels from its neighborhood. We further up-scale the input video sequence in temporal dimension based on the extended 3D NC and hence more video frames can be generated. Fundamental experiments demonstrate the effectiveness of the proposed SR framework both quantitatively and perceptually. &copy; 2012 Elsevier B.V.

Number of references:27

Main heading:Motion estimation

Controlled terms:Optical resolving power - Pixels - Three dimensional - Time and motion study

Uncontrolled terms:Accurate registration - Aliasing - Global motion - High resolution - Input videos - Low resolution images - Normalized convolution - Subpixel accuracy - Superresolution - Temporal dimensions  - Video frame - Video sequences - Video super-resolution - Weighted averages

Classification code:461.4 Ergonomics and Human Factors Engineering - 716.1 Information Theory and Signal Processing - 723.5 Computer Applications - 741.1 Light/Optics - 902.1 Engineering Graphics

DOI:10.1016/j.neucom.2012.03.012

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 5>

 

Accession number:20120314701898

Title:Investigation on terahertz vibrational modes of crystalline benzoic acid

Authors:Yan, Hui (1); Fan, Wen-Hui (1); Zheng, Zhuan-Ping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.-H.(fanwh@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:6

Issue date:March 15, 2012

Publication year:2012

Pages:1593-1598

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:The characteristic absorption features of crystalline benzoic acid in 0.1-4.0 THz have been measured by terahertz time-domain spectroscopy experimentally. Three sharp and low-intensity peaks are observed in the lowest frequency range of 0.1-1.5 THz. In particular, the absorption peak at 0.63 THz is reported for the first time, to the best of our knowledge. Moreover, theoretical simulations have also been performed, and all measured terahertz absorption features are unambiguously assigned. Our calculations clearly show that the first three absorption features arise from translation motions of dimers held together by hydrogen bonds. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:27

Main heading:Terahertz spectroscopy

Controlled terms:Carboxylic acids - Crystalline materials - Hydrogen bonds - Time domain analysis

Uncontrolled terms:Benzoic acid - CASTEP - DFT - MP2 - THz-TDS

Classification code:801.4 Physical Chemistry - 804.1 Organic Compounds - 921 Mathematics - 931.1 Mechanics - 933.1 Crystalline Solids

DOI:10.1016/j.optcom.2011.11.046

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 6>

 

Accession number:20124815717029

Title:Performances of non-line-of-sight ultraviolet multi-scatter propagation for noncoplanar geometries

Authors:Yinan, Tang (1); Xiaoping, Xie (1); Wei, Zhao (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an, Shaanxi, 710119, China

Corresponding author:Yinan, T.(s09012@opt.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:571

Monograph title:Opto-Electronics Engineering and Materials Research

Issue date:2012

Publication year:2012

Pages:214-218

Language:English

ISSN:10226680

ISBN-13:9783037854884

Document type:Conference article (CA)

Conference name:2012 International Meeting on Opto-Electronics Engineering and Materials Research, OEMR 2012

Conference date:July 27, 2012 - July 29, 2012

Conference location:Shenyang, Liaoning, China

Conference code:93247

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:A multi-scatter propagation model based on Monte Carlo method is presented. This model can be applied to all the geometries, including coplanar or noncoplanar scenario. The mathematical description of this model is deduced. We obtain the spatial positions of photon with three Cartesian coordinates after each propagation step and the received judgment conditions. Employing a photon tracing technique, Monte Carlo simulation is performed to investigate the signal impulse response and the path loss. The results indicate that, when the off-axis angle increases, the amplitude of the impulse response decreases, while the path loss increases. In addition, it is observed that the pulse width increases with the off-axis angle. &copy; (2012) Trans Tech Publications, Switzerland.

Number of references:20

Main heading:Monte Carlo methods

Controlled terms:Electronics engineering - Impulse response - Materials science - Photons

Uncontrolled terms:Cartesian coordinate - Mathematical descriptions - Monte Carlo Simulation - Multi-scatter - Non-coplanar - Non-line-of-sight - Off-axis angles - Path loss - Photon tracing - Propagation models  - Propagation step - Pulsewidths - Spatial positions

Classification code:922.2 Mathematical Statistics - 741.1 Light/Optics - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 951 Materials Science - 716 Telecommunication; Radar, Radio and Television - 714 Electronic Components and Tubes - 713 Electronic Circuits - 408.1 Structural Design, General - 715 Electronic Equipment, General Purpose and Industrial

DOI:10.4028/www.scientific.net/AMR.571.214

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 7>

 

Accession number:20120414712580

Title:A review of 3D aircraft image recognition methods

Authors:Zhu, Xufeng (1); Ma, Caiwen (1)

Author affiliation:(1) Xi'an Institute of Optics Mechanics and Physics, Chinese Academy of Science, Xi'an, 710119, China; (2) Graduate University of Chinese Academy of Science, Beijing, 100049, China

Corresponding author:Zhu, X.(zhuxufeng@126.com)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:433-440

Monograph title:Materials Science and Information Technology, MSIT2011

Issue date:2012

Publication year:2012

Pages:2794-2801

Language:English

ISSN:10226680

ISBN-13:9783037853191

Document type:Conference article (CA)

Conference name:2011 International Conference on Material Science and Information Technology, MSIT2011

Conference date:September 16, 2011 - September 18, 2011

Conference location:Singapore, Singapore

Conference code:88150

Sponsor:Singapore Institute of Electronics

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:this paper provides a review of 3D aircraft object recognition methods based on 2D images. First, essentialities and advantages on 3D aircraft image recognition are analyzed. Second, in view of the aircraft image recognition system model, the traits of aircraft images are elaborated, then the methods of aircraft image recognition at every stage are discussed, especial the methods of feature extraction about aircraft image and the feasibilities, which some new methods about 3D object recognition are used to aircraft image recognition, are focused. At last, some issues about aircraft image recognition which should be further studied in the future are proposed. &copy; (2012) Trans Tech Publications, Switzerland.

Number of references:33

Main heading:Three dimensional

Controlled terms:Aircraft - Aircraft materials - Classification (of information) - Feature extraction - Image recognition - Information technology - Materials science - Object recognition

Uncontrolled terms:2D images - 3d object recognition - Image recognition system - Recognition methods

Classification code:903.1 Information Sources and Analysis - 903 Information Science - 902.1 Engineering Graphics - 951 Materials Science - 716.1 Information Theory and Signal Processing - 652.2 Aircraft Materials - 652.1 Aircraft, General - 716 Telecommunication; Radar, Radio and Television

DOI:10.4028/www.scientific.net/AMR.433-440.2794

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 8>

 

Accession number:20123615394913

Title:Intense 2.7 &mu;m emission of Er3+-doped water-free fluorotellurite glasses

Authors:Zhan, Huan (1); Zhou, Zhiguang (1); He, Jianli (1); Lin, Aoxiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics(XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China; (2) Graduate School of Chinese Academy of Sciences (CAS), Beijing 100049, China

Corresponding author:Lin, A.(aoxiang@opt.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:37

Issue:16

Issue date:August 15, 2012

Publication year:2012

Pages:3408-3410

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:By physical and chemical dehydration techniques, a group of Er3+-doped water-free fluorotellurite glasses with a composition of 60TeO2 -30ZnF2 -10NaFTZNF60; mol% + x Er2O3wt%; x 0 &tilde; 1.5 were fabricated. Under 978 nm excitation, the 4I11 / 2 ? 4I13 / 2 emission of Er3+ ions in TZNF60-glass was investigated: tf is of 1.07 &tilde; 1.93 ms and emission bandwidth is about 163 nm at 2.71 &mu;m, which benefits from the absence of OH groups and the decreased phonon energy with the addition of fluorides. In contrast, 1.25Er-TZNF60 glass is proposed to be a promising material for mid-infrared fiber lasers at around 2.7 &mu;m. &copy; 2012 Optical Society of America.

Number of references:24

Main heading:Glass

Controlled terms:Erbium - Fiber lasers - Fluorine compounds

Uncontrolled terms:Emission bandwidth - Er3+ ions - Midinfrared - OH group - Phonon energies

Classification code:547.2 Rare Earth Metals - 741.1.2 Fiber Optics - 804.1 Organic Compounds - 812.3 Glass

DOI:10.1364/OL.37.003408

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 9>

 

Accession number:20122115047523

Title:Optical transmittance measurement system for coated elements with low transmittance

Authors:Wang, Hongyun (1); Da, Zhengshang (1); Liu, Lili (1); Zhao, Juanning (1)

Author affiliation:(1) Advanced Optical Instrument Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wang, H.(dazhengshang@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:13

Issue date:May 1, 2012

Publication year:2012

Pages:2395-2399

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The low-transmittance elements required for a high power laser facility have stringent specifications about transmittance. To validate optic performance against specifications, a metrology system for transmittance is proposed. The system is composed of a laser source, an integrating sphere, a power meter, and four uncoated wedged glasses. A relative measurement method is adopted, which is that the surface reflectivity of uncoated glass is used as the reference to compare with the sample's transmittance. The systematic feature is that uncoated wedged glasses are applied to split and reflect beams, which not only avoid coating errors, but also make the two beam powers attenuate properly. Measurement results for a sample's transmittance are presented. Experiment and analysis show that the relative standard uncertainty (&sigma;T/T) of measurement is 0.424%. This system is available for large-aperture elements. &copy; 2012 Optical Society of America.

Number of references:16

Main heading:Glass

Controlled terms:High power lasers - Specifications - Spheres - Systematic errors

Uncontrolled terms:Experiment and analysis - High power laser facility - Integrating spheres - Large aperture - Laser sources - Measurement results - Metrology systems - Power meters - Relative measurement - Standard uncertainty  - Surface reflectivity - Systematic features - Transmittance measurements - Two beams

Classification code:631 Fluid Flow - 744.1 Lasers, General - 812.3 Glass - 902.2 Codes and Standards - 922 Statistical Methods

DOI:10.1364/AO.51.002395

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 10>

 

Accession number:20123815452472

Title:Amplitude weighting method for beamforming in far-field from uniform array

Authors:Zhong, Lanxian (1); Zhang, Zhiyong (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, Shaanxi 710068, China; (2) School of Information and Technology, Northwest University, Xi'an, Shaanxi 710069, China

Corresponding author:Zhong, L.(lanx@nwu.edu.cn)

Source title:Lecture Notes in Electrical Engineering

Abbreviated source title:Lect. Notes Electr. Eng.

Volume:127 LNEE

Issue:VOL. 4

Monograph title:Recent Advances in Computer Science and Information Engineering

Issue date:2012

Publication year:2012

Pages:69-76

Language:English

ISSN:18761100

E-ISSN:18761119

ISBN-13:9783642257681

Document type:Conference article (CA)

Conference name:2nd World Congress on Computer Science and Information Engineering, CSIE 2011

Conference date:June 17, 2011 - June 19, 2011

Conference location:Changchun, China

Conference code:92698

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:An amplitude weighting method of forming a specific radiation pattern in far-field was proposed, which is different from the phase-array beamforming. The formula for calculating radiation amplitudes was derived in detail. Numerical results illustrated that radiation pattern with limited distribution can be closed in upon by increasing the number of elements, and it was indicated that the total number of elements can be determined in ratio of the main lobe energy to total radiation energy. &copy; Springer-Verlag Berlin Heidelberg 2012.

Number of references:24

Main heading:Beamforming

Controlled terms:Antenna phased arrays - Computer science

Uncontrolled terms:Amplitude weighting - Far-field - Limited distribution - Numerical results - Radiation amplitude - Radiation energy - Uniform array

Classification code:732 Control Devices - 731 Automatic Control Principles and Applications - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 721 Computer Circuits and Logic Elements - 716 Telecommunication; Radar, Radio and Television - 713 Electronic Circuits

DOI:10.1007/978-3-642-25769-8-11

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 11>

 

Accession number:20123615400276

Title:Snapshot imaging polarimeter using modified Savart polariscopes

Authors:Cao, Qizhi (1); Zhang, Chunmin (1); De Hoog, Edward (4)

Author affiliation:(1) Xi'An Jiaotong University School of Science, Ministry of Education, Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an 710049, China; (2) Spatial Optics Department, Xi'An Institute of Optics and Precision Mechanics, Academia Sinica, Xi'an 710048, China; (3) School of Physics and Electronic Information Science, Guangxi Teachers College, Nanning 530023, China; (4) Physical Optics Corporation, 1845 W. 205th Street, Torrance, CA 90501, United States

Corresponding author:Zhang, C.(zcm@mail.xjtu.edu.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:24

Issue date:August 20, 2012

Publication year:2012

Pages:5791-5796

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:In this paper, based on the combination of two modified Savart polariscopes, we present a snapshot imaging polarimeter and show that the carrier frequency is two times higher than that of the snapshot imaging polarimeter using two conventional Savart polariscopes. The signal-to-noise ratio and the spatial resolution of imagery in each channel are improved due to the increase of the carrier frequency when we filter the channels to recover the Stokes vector images. Moreover, compared with conventional imaging polarimetry, the remarkable advantage of the proposed instrument is that it is also simple, compact, miniature, snapshotted, and static (no moving parts). To demonstrate the feasibility of the proposed snapshot imaging polarimeter, the numerical simulation of a design example is presented in detail. &copy; 2012 Optical Society of America.

Number of references:9

Main heading:Polarimeters

Controlled terms:Ray tracing

Uncontrolled terms:Carrier frequency - Conventional imaging - Imaging Polarimeter - Moving parts - Savart polariscope - Spatial resolution - Stokes vector

Classification code:741.1 Light/Optics - 941.3 Optical Instruments

DOI:10.1364/AO.51.005791

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 12>

 

Accession number:20122015026325

Title:Efficient optical Kerr gate of tellurite glass for acquiring ultrafast fluorescence

Authors:Zhang, Hang (1); Zhou, Zhiguang (2); Lin, Aoxiang (2); Cheng, Jun (1); Liu, Hui (1); Si, Jinhai (1); Chen, Feng (1); Hou, Xun (1)

Author affiliation:(1) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Xian Jiaotong University, Xianning-xilu 28, Xian 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xian 710119, China

Corresponding author:Zhang, H.

Source title:Journal of Optics

Abbreviated source title:J. Opt.

Volume:14

Issue:6

Issue date:June 2012

Publication year:2012

Article number:065201

Language:English

ISSN:20408978

E-ISSN:20408986

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United Kingdom

Abstract:We investigated the ultrafast optical Kerr effect of tellurite glass (Te glass) by the femtosecond time-resolved pumpprobe technique. The Kerr-gated spectra from a chirped supercontinuum (SC) obtained by a Te glass optical Kerr gate (OKG) were of a narrow bandwidth and wide range of transmittance spectra. Time-resolved violet fluorescence of a ZnO thin film with high temporal resolution was measured using the Te glass OKG. Experimental results showed that Te glass was a good candidate for an OKG medium due to its ultrafast response, large transmittance window, and large nonlinear refractive index. &copy; 2012 IOP Publishing Ltd.

Number of references:33

Main heading:Glass

Controlled terms:Fluorescence - Optical Kerr effect - Refractive index - Tellurium compounds

Uncontrolled terms:Femtoseconds - Nonlinear refractive index - Optical Kerr gate - Tellurite glass - Ultra-fast

Classification code:741.1 Light/Optics - 804.1 Organic Compounds - 812.3 Glass

DOI:10.1088/2040-8978/14/6/065201

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 13>

 

Accession number:20132016337987

Title:Design of miniature camera lens including diffractive optical elements

Authors:Yu, Dengqun (1); Cao, Jianzhong (1); Zhang, Jian (1); Yan, Aqi (1); Guo, Huinan (1)

Author affiliation:(1) Xi'an Institute of Optical Precision Mechanics, CAS, Xi'an, China

Source title:Proceedings of the 2012 4th International Symposium on Information Science and Engineering, ISISE 2012

Abbreviated source title:Proc. Int. Symp. Inf. Sci. Eng., ISISE

Monograph title:Proceedings of the 2012 4th International Symposium on Information Science and Engineering, ISISE 2012

Issue date:2012

Publication year:2012

Pages:404-407

Article number:6495374

Language:English

ISBN-13:9780769549514

Document type:Conference article (CA)

Conference name:2012 4th International Symposium on Information Science and Engineering, ISISE 2012

Conference date:December 14, 2012 - December 16, 2012

Conference location:Shanghai, China

Conference code:96852

Sponsor:Shanghai Institute of Electronics; Shanghai Jiaotong University; Fudan University; Peoples' Friendship University of Russia; Feng Chia University

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:To meet the demand for miniature camera lens, in this paper, there designed a new type of miniature plastic lens, which is made up of three lenses. The second surface of the first lens is designed as a diffractive surface. The diffractive lens is used to eliminate aberration. There has investigated the primary aberration about the systems expressed by PWC. The function relation among P<inf>&infin;</inf>, W<inf>&infin;</inf>, C<inf>&infin;</inf>, and the diffractive lens structure have been established. These three lens materials are 'PMMAO', 'P-CARBO' and 'PMMAO'. The F-number is 2. 4 and FOV is 50&deg;. The overall length of this optical system is 6.52mm. The MTF at 250lp/mm is higher than 0. 3. &copy; 2012 IEEE.

Number of references:8

Main heading:Camera lenses

Controlled terms:Information science - Optical design - Optical systems - Plastic lenses

Uncontrolled terms:Diffractive lens - Diffractive surfaces - Hybrid refractive-diffractive (HRD) system - Lens materials - Miniature cameras - Primary aberration

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 903 Information Science

DOI:10.1109/ISISE.2012.97

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 14>

 

Accession number:20132216378704

Title:A new DFT based channel estimation method for OFDM systems over multipath channels

Authors:Wang, Jing (1); Qiu, Yuehong (1)

Author affiliation:(1) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an, China

Source title:Proceedings of the 2012 National Conference on Information Technology and Computer Science, CITCS 2012

Abbreviated source title:Proc. Natl. Conf. Inf. Technol. Comput. Sci., CITCS

Monograph title:Proceedings of the 2012 National Conference on Information Technology and Computer Science, CITCS 2012

Issue date:2012

Publication year:2012

Pages:690-693

Language:English

ISBN-13:9789491216381

Document type:Conference article (CA)

Conference name:2012 National Conference on Information Technology and Computer Science, CITCS 2012

Conference date:November 16, 2012 - November 18, 2012

Conference location:Lanzhou, China

Conference code:97073

Sponsor:Henan University; Yanshan University; Wenzhou University; Jiangsu University of Science and Technology; Xi'an University of Science and Technology

Publisher:Atlantis Press, 29 avenue Laumiere, Paris, 75019, France

Abstract:Channel estimation is one of the most significant technologies in the orthogonal frequency division multiplexing (OFDM) system and its accuracy will influence the performance of the whole system directly. Among all kinds of channel estimation algorithms, the least square(LS)estimation and the linear minimum mean-squared error (LMMSE) estimation are the most classic ones. However, both the two estimator are not able to reach a compromise between accuracy and computational complexity. The discrete Fourier transform (DFT) -based channel estimation can get a better performance by a time domain processing. In this paper, we proposed an improved DFT based channel estimation which suppresses the noise by a new threshold setting method. The computer simulation results demonstrate that the proposed algorithm can reach accuracy close to the LMMSE algorithm and its computational complexity is much lower than the LMMSE estimator. &copy; 2012. The authors - Published by Atlantis Press.

Number of references:9

Main heading:Estimation

Controlled terms:Algorithms - Channel estimation - Computational complexity - Computer science - Computer simulation - Discrete Fourier transforms - Information technology - Orthogonal frequency division multiplexing - Telecommunication systems

Uncontrolled terms:Better performance - Channel estimation algorithms - Channel estimation method - DFT - Linear minimum mean-squared errors - Orthogonal frequency division multiplexing systems - Threshold - Time-domain processing

Classification code:921 Mathematics - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 921.3 Mathematical Transformations - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 721 Computer Circuits and Logic Elements

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 15>

 

Accession number:20124415633778

Title:Fluorescence volume imaging with an axicon: Simulation study based on scalar diffraction method

Authors:Zheng, Juanjuan (1); Yang, Yanlong (1); Lei, Ming (1); Yao, Baoli (1); Gao, Peng (1); Ye, Tong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Department of Neurobiology, University of Alabama-Birmingham, Birmingham, AL 35294, United States

Corresponding author:Ye, T.(tongtye@gmail.com)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:30

Issue date:October 20, 2012

Publication year:2012

Pages:7236-7245

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:In a two-photon excitation fluorescence volume imaging (TPFVI) system, an axicon is used to generate a Bessel beam and at the same time to collect the generated fluorescence to achieve large depth of field. A slice-by-slice diffraction propagation model in the frame of the angular spectrum method is proposed to simulate the whole imaging process of TPFVI. The simulation reveals that the Bessel beam can penetrate deep in scattering media due to its self-reconstruction ability. The simulation also demonstrates that TPFVI can image a volume of interest in a single raster scan. Two-photon excitation is crucial to eliminate the signals that are generated by the side lobes of Bessel beams; the unwanted signals may be further suppressed by placing a spatial filter in the front of the detector. The simulation method will guide the system design in improving the performance of a TPFVI system. &copy; 2012 Optical Society of America.

Number of references:30

Main heading:Geometrical optics

Controlled terms:Bessel functions - Diffraction - Fluorescence - Laser beams - Optical waveguides - Photons - Spectrum analysis

Uncontrolled terms:Angular spectrum method - Bessel beam - Depth of field - Imaging process - Propagation models - Raster scans - Scalar diffraction - Scattering media - Side lobes - Simulation methods  - Simulation studies - Spatial filters - Two photon excitation fluorescence - Two-photon excitations - Volume imaging - Volume of interest

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.8 Laser Beam Interactions - 921 Mathematics

DOI:10.1364/AO.51.007236

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 16>

 

Accession number:20130615994204

Title:Position and orientation control of an omni-directional mobile rehabilitation robot

Authors:Luo, Dongfeng (1); Schauer, Thomas (2); Roth, Michael (2); Raisch, Jorg (1)

Author affiliation:(1) Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany; (2) Technische Universit&#228;t Berlin, Control Systems Group, Berlin, Germany; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Corresponding author:Luo, D.

Source title:Proceedings of the IEEE International Conference on Control Applications

Abbreviated source title:Proc. IEEE Int. Conf. Control Appl.

Monograph title:2012 IEEE International Conference on Control Applications, CCA 2012

Issue date:2012

Publication year:2012

Pages:50-56

Article number:6402680

Language:English

ISBN-13:9781467345033

Document type:Conference article (CA)

Conference name:2012 IEEE International Conference on Control Applications, CCA 2012

Conference date:October 3, 2012 - October 5, 2012

Conference location:Dubrovnik, Croatia

Conference code:95270

Publisher:Institute of Electrical and Electronics Engineers Inc., 3 Park Avenue, 17th Floor, New York, NY 10016-5997, United States

Abstract:Position and orientation control for an omni-directional mobile robot are investigated. The table-placed robot shall be used for arm and shoulder rehabilitation of stroke patients. The position and orientation of the device are determined by means of a modified Kalman filter which encompasses a kinematic model of the robot. By fusing information from incremental encoders at the robot and from an infrared camera at the ceiling, accurate and reliable estimates of robot position and orientation can be obtained. A cascaded position controller is designed for the mobile robot to allow the tracking of arbitrary translational reference movements and the stabilisation of the robot orientation. On the inner control loop, individual angular velocity controllers have been implemented for the three wheels to achieve maximum actuator performance and to facilitate a simplified state-space description of the robot dynamics. For the outer loop, a multi-variable state-space controller is utilised in form of a discrete-time linear quadratic regulator. The sensor fusion scheme and control system are validated in experiments and the obtained results are discussed. &copy; 2012 IEEE.

Number of references:15

Main heading:Position control

Controlled terms:Mobile robots

Uncontrolled terms:Actuator performance - Control loop - Incremental encoder - Infra-red cameras - Kinematic model - Linear quadratic regulator - Omni-directional - Omnidirectional mobile robot - Orientation control - Outer loop  - Position controller - Rehabilitation robot - Reliable estimates - Robot dynamics - Robot orientation - Robot positions - Sensor fusion - State-space - State-space description - Stroke patients  - Velocity controllers

Classification code:731 Automatic Control Principles and Applications

DOI:10.1109/CCA.2012.6402680

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 17>

 

Accession number:20124415609326

Title:Approximation analysis of empirical feature-based learning with truncated sparsity

Authors:Chen, Hong (1); Xiang, Hu-Zhou (1); Tang, Yi (2); Yu, Zhao (1); Zhang, Xiao-Li (1)

Author affiliation:(1) College of Science, Huazhong Agricultural University, Wuhan 430070, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Chen, H.(chenh@mail.hzau.edu.cn)

Source title:International Conference on Wavelet Analysis and Pattern Recognition

Abbreviated source title:Int. Conf. Wavelet Anal. Pattern Recogn.

Monograph title:Proceedings of 2012 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR 2012

Issue date:2012

Publication year:2012

Pages:118-124

Article number:6294765

Language:English

ISSN:21585695

E-ISSN:21585709

ISBN-13:9781467315326

Document type:Conference article (CA)

Conference name:2012 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR 2012

Conference date:July 15, 2012 - July 17, 2012

Conference location:Xian, Shaanxi, China

Conference code:93288

Sponsor:Hebei University; Chongqing University; South China University of Technology; Hong Kong Baptist University; Hebei University of Science and Technology

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:A sparse algorithm, based on empirical feature selection, is investigated from the viewpoint of learning theory. It is a novel way to realize sparse empirical feature-based learning different from the regularized kernel projection machines. Representer theorem and error analysis of this algorithm are established without sparsity assumption of regression function. An empirical study verifies our theoretical analysis. &copy; 2012 IEEE.

Number of references:16

Main heading:Wavelet analysis

Controlled terms:Algorithms - Error analysis - Pattern recognition

Uncontrolled terms:Empirical feature - Empirical risk minimization - Learning Theory - Reproducing Kernel Hilbert spaces - Sparse

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.6 Numerical Methods

DOI:10.1109/ICWAPR.2012.6294765

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 18>

 

Accession number:20133016524923

Title:Simulation of incoherently coupled multicomponent solitons on MATLAB

Authors:Li, Kehao (1); Chen, Weijun (2); Wang, Chunxiang (2); Hui, Juanli (2); Lu, Keqing (1)

Author affiliation:(1) State Key Laboratory of Transient Optics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710068, China; (2) School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300160, China; (3) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Source title:Proceedings of 2nd International Conference on Computer Science and Network Technology, ICCSNT 2012

Abbreviated source title:Proc. Int. Conf. Comput. Sci. Netw. Technol., ICCSNT

Monograph title:Proceedings of 2nd International Conference on Computer Science and Network Technology, ICCSNT 2012

Issue date:2012

Publication year:2012

Pages:1431-1434

Article number:6526189

Language:English

ISBN-13:9781467329644

Document type:Conference article (CA)

Conference name:2nd International Conference on Computer Science and Network Technology, ICCSNT 2012

Conference date:December 29, 2012 - December 31, 2012

Conference location:Changchun, China

Conference code:97797

Sponsor:Northeast Normal University; Heilongjiang University; Liaoning Normal University; Dalian Jiaotong University; Harbin Institute of Technology

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:We show that incoherently coupled multicomponent beam evolution equations in the low-amplitude regime in biased photorefractive-photovoltaic crystals can exhibit the analytical solutions of multicomponent solitons, which are due to both the spatially nonuniform screening of the external electric field and the photovoltaic effect. These multicomponent solitons can be obtained for N self-trapped mutually incoherent optical beams, where N is an arbitrary whole number. When the photovoltaic effect is neglected, their nonlinear evolution equations change into that for multicomponent screening solitons, and these multicomponent solitons change into multicomponent screening solitons. When the external bias field is absent, their nonlinear evolution equations change into that for multicomponent photovoltaic solitons in closed and open circuits, and these multicomponent solitons change into multicomponent photovoltaic solitons in closed and open circuits. &copy; 2012 IEEE.

Number of references:19

Main heading:Solitons

Controlled terms:Computer science - MATLAB - Nonlinear optics - Photorefractive crystals - Photovoltaic effects

Uncontrolled terms:Biased photorefractive-photovoltaic crystals - Evolution equations - External electric field - Multicomponents - Nonlinear evolution equation - Photovoltaic soliton - Screening solitons - Spatially nonuniform screening

Classification code:921.1 Algebra - 921 Mathematics - 741.1.1 Nonlinear Optics - 741.1 Light/Optics - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 721 Computer Circuits and Logic Elements

DOI:10.1109/ICCSNT.2012.6526189

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 19>

 

Accession number:20121314907743

Title:Robust CoHOG feature extraction in human-centered image/video management system

Authors:Pang, Yanwei (1); Yan, He (1); Yuan, Yuan (2); Wang, Kongqiao (3)

Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Nokia Research Center, Beijing 100176, China

Corresponding author:Pang, Y.(pyw@tju.edu.cn)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:42

Issue:2

Monograph title:SPECIAL ISSUE ON SUBSPACE AND MANIFOLD LEARNING FOR IMAGE AND VIDEO INDEXING AND SEARCH

Issue date:April 2012

Publication year:2012

Pages:458-468

Article number:6084765

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Many human-centered image and video management systems depend on robust human detection. To extract robust features for human detection, this paper investigates the following shortcomings of co-occurrence histograms of oriented gradients (CoHOGs) which significantly limit its advantages: 1) The magnitudes of the gradients are discarded, and only the orientations are used; 2) the gradients are not smoothed, and thus, aliasing effect exists; and 3) the dimensionality of the CoHOG feature vector is very large (e.g., 200000). To deal with these problems, in this paper, we propose a framework that performs the following: 1) utilizes a novel gradient decomposition and combination strategy to make full use of the information of gradients; (2) adopts a two-stage gradient smoothing scheme to perform efficient gradient interpolation; and (3) employs incremental principal component analysis to reduce the large dimensionality of the CoHOG features. Experimental results on the two different human databases demonstrate the effectiveness of the proposed method. &copy; 2006 IEEE.

Number of references:48

Main heading:Search engines

Controlled terms:Feature extraction - Graphic methods - Image retrieval - Management - Principal component analysis

Uncontrolled terms:Aliasing effects - Co-occurrence histograms of oriented gradients - Combination strategies - Feature vectors - Gradient interpolation - Gradient smoothing - Histograms of oriented gradients - Human detection - Incremental principal component analysis - Management systems  - Two stage - Video management

Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 741 Light, Optics and Optical Devices - 912.2 Management - 922.2 Mathematical Statistics

DOI:10.1109/TSMCB.2011.2167750

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 20>

 

Accession number:20124015484282

Title:Geometry constrained sparse coding for single image super-resolution

Authors:Lu, Xiaoqiang (1); Yuan, Haoliang (1); Yan, Pingkun (1); Yuan, Yuan (1); Li, Xuelong (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Lu, X.(luxq666666@opt.ac.cn)

Source title:Proceedings of the IEEE Computer Society Conference on Computer  Vision and Pattern Recognition

Abbreviated source title:Proc IEEE Comput Soc Conf Comput Vision Pattern Recognit

Monograph title:2012 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2012

Issue date:2012

Publication year:2012

Pages:1648-1655

Article number:6247858

Language:English

ISSN:10636919

CODEN:PIVRE9

ISBN-13:9781467312264

Document type:Conference article (CA)

Conference name:2012 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2012

Conference date:June 16, 2012 - June 21, 2012

Conference location:Providence, RI, United states

Conference code:92817

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:The choice of the over-complete dictionary that sparsely represents data is of prime importance for sparse coding-based image super-resolution. Sparse coding is a typical unsupervised learning method to generate an over-complete dictionary. However, most of the sparse coding methods for image super-resolution fail to simultaneously consider the geometrical structure of the dictionary and corresponding coefficients, which may result in noticeable super-resolution reconstruction artifacts. In this paper, a novel sparse coding method is proposed to preserve the geometrical structure of the dictionary and the sparse coefficients of the data. Moreover, the proposed method can preserve the incoherence of dictionary entries, which is critical for sparse representation. Inspired by the development on non-local self-similarity and manifold learning, the proposed sparse coding method can provide the sparse coefficients and learned dictionary from a new perspective, which have both reconstruction and discrimination properties to enhance the learning performance. Extensive experimental results on image super-resolution have demonstrated the effectiveness of the proposed method. &copy; 2012 IEEE.

Number of references:22

Main heading:Image coding

Controlled terms:Computer vision - Geometry - Optical resolving power

Uncontrolled terms:Geometrical structure - Image super-resolution - Learning performance - Manifold learning - Nonlocal - Over-complete - Self-similarities - Single images - Sparse coding - Sparse representation  - Super-resolution reconstruction - Unsupervised learning method

Classification code:741 Light, Optics and Optical Devices - 921 Mathematics

DOI:10.1109/CVPR.2012.6247858

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 21>

 

Accession number:20123415354495

Title:Research on information dissemination in urban rail transit line network

Authors:Han, Quan-Ye (1); Wang, Xiao-Ming (2); Dang, Jian-Wu (2)

Author affiliation:(1) Shaanxi Radio and TV University, Shaanxi Business College, Department of Computing Informatics, Shaanxi Xian 710119, China; (2) Key Laboratory Opto-Electronic Technology and Intelligent Control, Lanzhou Jiaotong University, Lanzhou 730070, China

Corresponding author:Han, Q.-Y.(hqy@mail.lzjtu.cn)

Source title:Communications in Computer and Information Science

Abbreviated source title:Commun. Comput. Info. Sci.

Volume:304 CCIS

Monograph title:Emerging Intelligent Computing Technology and Applications - 8th International Conference, ICIC 2012, Proceedings

Issue date:2012

Publication year:2012

Pages:328-335

Language:English

ISSN:18650929

ISBN-13:9783642318368

Document type:Conference article (CA)

Conference name:8th International Conference on Emerging Intelligent Computing Technology and Applications, ICIC 2012

Conference date:July 25, 2012 - July 29, 2012

Conference location:Huangshan, China

Conference code:91951

Sponsor:IEEE Computational Intelligence Society; International Neural Network Society; National Science Foundation of China

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:Based on the push and pull approach, a kind of adaptive disseminating mechanism is presented, which combines push with pull, by which the system of emergency coordination center in urban rail transit line network can dynamically allocate the available resource between push and pull clients so as to optimize the sending time delay of data chunk in network given their desired currency. The major conclusion is the approach of combined push with pull can fit to stringent coherency requirements information and less stringent coherency requirements information. Also it can fit to information provided according to user's requirements. The approach can better meet the requirement of currency of information on urban rail transit line network. &copy; 2012 Springer-Verlag.

Number of references:7

Main heading:Light rail transit

Controlled terms:Information dissemination - Intelligent computing

Uncontrolled terms:Data chunks - Line network - Urban rail transit

Classification code:682 Railroad Rolling Stock - 723.4 Artificial Intelligence - 903.2 Information Dissemination

DOI:10.1007/978-3-642-31837-5_48

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 22>

 

Accession number:20124015484351

Title:Matrix completion by Truncated Nuclear Norm Regularization

Authors:Zhang, Debing (1); Hu, Yao (1); Ye, Jieping (2); Li, Xuelong (3); He, Xiaofei (1)

Author affiliation:(1) State Key Lab of CADandCG, Zhejiang University, Hangzhou, China; (2) Arizona University, Tempe, AZ 85287, United States; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China

Corresponding author:Zhang, D.(debingzhangchina@gmail.com)

Source title:Proceedings of the IEEE Computer Society Conference on Computer  Vision and Pattern Recognition

Abbreviated source title:Proc IEEE Comput Soc Conf Comput Vision Pattern Recognit

Monograph title:2012 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2012

Issue date:2012

Publication year:2012

Pages:2192-2199

Article number:6247927

Language:English

ISSN:10636919

CODEN:PIVRE9

ISBN-13:9781467312264

Document type:Conference article (CA)

Conference name:2012 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2012

Conference date:June 16, 2012 - June 21, 2012

Conference location:Providence, RI, United states

Conference code:92817

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:Estimating missing values in visual data is a challenging problem in computer vision, which can be considered as a low rank matrix approximation problem. Most of the recent studies use the nuclear norm as a convex relaxation of the rank operator. However, by minimizing the nuclear norm, all the singular values are simultaneously minimized, and thus the rank can not be well approximated in practice. In this paper, we propose a novel matrix completion algorithm based on the Truncated Nuclear Norm Regularization (TNNR) by only minimizing the smallest N-r singular values, where N is the number of singular values and r is the rank of the matrix. In this way, the rank of the matrix can be better approximated than the nuclear norm. We further develop an efficient iterative procedure to solve the optimization problem by using the alternating direction method of multipliers and the accelerated proximal gradient line search method. Experimental results in a wide range of applications demonstrate the effectiveness of our proposed approach. &copy; 2012 IEEE.

Number of references:17

Main heading:Problem solving

Controlled terms:Computer vision - Iterative methods - Relaxation processes

Uncontrolled terms:Alternating direction methods - Convex relaxation - Iterative procedures - Line search method - Low-rank matrices - Matrix completion - Missing values - Optimization problems - Singular values - Visual data

Classification code:723.5 Computer Applications - 921 Mathematics - 921.6 Numerical Methods - 931.1 Mechanics

DOI:10.1109/CVPR.2012.6247927

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 23>

 

Accession number:20125015787489

Title:Focusing properties of the visible light wave through plasmonic lenses with subwavelength chirped slits

Authors:Feng, Di (1); Zhang, Chunxi (2); Yang, Yuanhong (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China

Corresponding author:Feng, D.(fengdi@buaa.edu.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:586

Monograph title:Advanced Materials and Information Technology Processing II

Issue date:2012

Publication year:2012

Pages:356-362

Language:English

ISSN:10226680

ISBN-13:9783037855232

Document type:Conference article (CA)

Conference name:2012 2nd International Conference on Advanced Materials and Information Technology Processing, AMITP 2012

Conference date:October 17, 2012 - October 18, 2012

Conference location:Taipei, Taiwan

Conference code:94267

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:Focusing properties of a new kind of plasmonic lenses are investigated in the visible wavelength range through a subwavelength metallic chirped slit arrays which have the same depth but chirped widths. The chirped widths of slits are like a piece-wise-linear distribution which will be approximated by linearly increasing the width of a subwavelength feature and can build up a required phase front for focusing. We analyzed the focusing characteristics of different metallic lenses (silver and gold, respectively) with chirped widths that are obtained by generalizing the relevant phase delay for TE- and TM-polarized incident waves, for different f-numbers of lenses and for different material thickness, respectively. Meanwhile, the comparison of the metallic and dielectric lenses is also presented. The results of calculations show that, the metallic lenses are more sensitive to the polarization of incidence wave than that of dielectric lenses, and can get narrower full-width half-maximum (FWHM) beam width than that of dielectric lenses for TM-polarized incident waves, respectively. No matter which f-number we choose, the FWHM of dielectric lenses are higher than the plasmonic lenses, and the plasmonic lenses can get a higher focal resolution than dielectric lenses do. This kind of plasmonic lenses should have a good potential for applications in photonic and plasmonic integrated devices, sensing, and nano-optical manipulations, etc. &copy; (2012) Trans Tech Publications, Switzerland.

Number of references:15

Main heading:Lenses

Controlled terms:Directional patterns (antenna) - Focusing - Information technology - Plasmons

Uncontrolled terms:Beam widths - Dielectric lens - Focal resolution - Focusing properties - Full width half maximum - Incidence wave - Incident waves - Integrated device - Material thickness - Metallic lens  - Phase delay - Phase front - Plasmonic - Plasmonic lens - Slit array - Sub-wavelength - Sub-wavelength structures - Surface plasmons polaritons - Visible light - Visible-wavelength range

Classification code:712.1 Semiconducting Materials - 716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 903 Information Science

DOI:10.4028/www.scientific.net/AMR.586.356

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 24>

 

Accession number:20120714766788

Title:Prototype of an optical sampling oscilloscope with subpicosecond temporal resolution

Authors:Liu, Yuanshan (1); Zhang, Jianguo (1); Tang, Dingkang (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China

Corresponding author:Liu, Y.(bull-0601@opt.ac.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:32

Issue:1

Issue date:January 2012

Publication year:2012

Pages:0107002-1-0107002-7

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Low timing-jitter, "&sigma;"-type passively mode-locked fiber laser is used as a high-performance optical sampling pulse source, of which the operation stability is high and the repetition frequency is tunable. Then the generated sequence of ultrashort optical sampling pulses is launched together with a 80 Gb/s optical pulse signal under test into a 100 m-long highly nonlinear fiber (HNLF). The all-optical sampling of an optical signal under test is realized by utilizing the four-wave mixing (FWM) in a HNLF. Consequently, the waveform of a 80 Gb/s optical pulse signal with RZ format is precisely reproduced by a computer and is displayed on its screen by employing our developed software for digital signal processing and computer image processing, respectively. Moreover, the optical sampling oscilloscope prototype is used to measure the pulse waveform and pulse width at the output of a commercially available, actively mode-locked semiconductor laser which produces optical pulses of 1.8 ps width (measured by an autocorrelator) at the 10 GHz repetition frequency. In the experiment, the pulse width measured by this oscilloscope prototype system is 2.0 ps. It is clearly shown that our developed optical sampling oscilloscope prototype has a temporal resolution better than 900 fs.

Number of references:23

Main heading:Optical data processing

Controlled terms:Cathode ray oscilloscopes - Fiber lasers - Image processing - Laser pulses - Lasers - Optical devices - Semiconductor lasers - Signal sampling - Ultrashort pulses

Uncontrolled terms:80 Gb/s - All-optical sampling - Autocorrelators - Computer image processing - Highly nonlinear fibers - Mode-locked laser - Mode-locked semiconductor lasers - Non-Linearity - Operation stability - Optical pulse  - Optical sampling - Optical sampling oscilloscope - Optical signals - Prototype system - Pulse sources - Pulse waveforms - Pulse width - Repetition frequency - Subpicosecond - Temporal resolution  - Wave forms

Classification code:715 Electronic Equipment, General Purpose and Industrial - 741 Light, Optics and Optical Devices - 744 Lasers - 922 Statistical Methods

DOI:10.3788/AOS201232.0107002

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121214882972

Title:Research on object signal sampling and reconstruction based on laser beat frequency

Authors:Zhang, Yu (1); Luo, Xiujuan (1); Cao, Bei (1); Xia, Aili (1); Si, Qingdan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xinxi Road, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Science, Yuquan Road, Beijing 100049, China

Corresponding author:Zhang, Y.(yuzhang16@yahoo.com.cn)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:29

Monograph title:2012 International Workshop on Information and Electronics Engineering

Issue date:2012

Publication year:2012

Pages:2421-2426

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2012 International Workshop on Information and Electronics Engineering, IWIEE 2012

Conference date:March 10, 2012 - March 11, 2012

Conference location:Harbin, China

Conference code:89020

Sponsor:Harbin University of Science and Technology; International Science and Engineering Research Center

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:The observation of an object traditionally relies on the scale of optical system and the resolution is often limited by the diameter of telescope. Based on the laser interference technology, we adopt a new signal sampling method with which we sample the spectrum information by laser beat frequency. The overlapped beams interfere together and generate a series of fringes across the target. Different spectrum components of target are sampled by fringes with different spatial frequency. Then we will reconstruct the target image through inverse Fourier Transform. This method break through the difficulty that observation resolution was limited by the scale of optical system. &copy; 2011 Published by Elsevier Ltd.

Number of references:7

Main heading:Optical systems

Controlled terms:Electronics engineering - Image reconstruction - Signal sampling

Uncontrolled terms:Beat frequency - Inverse Fourier transforms - Laser interference - Spatial frequency - Spectrum information - Spectrum sampling - Target images

Classification code:922 Statistical Methods - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 713 Electronic Circuits

DOI:10.1016/j.proeng.2012.01.325

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20123815452271

Title:Dispersionless slow light in MIM waveguide based on a plasmonic analogue of electromagnetically induced transparency

Authors:Wang, Guoxi (1); Lu, Hua (1); Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, X.(liuxueming72@yahoo.com)

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:20

Issue:19

Issue date:September 10, 2012

Publication year:2012

Pages:20902-20907

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We have proposed a metal-insulator-metal (MIM) waveguide system, which exhibits a significant slow-light effect, based on a plasmonic analogue of electromagnetically induced transparency (EIT). By appropriately adjusting the distance between the two stubs of a unit cell, a flat band corresponding to nearly constant group index over a broad bandwidth of 8.6 THz can be achieved. The analytical results show that the group velocity dispersion (GVD) parameter can reach zero and normalized delay-bandwidth product (NDBP) is more than 0.522. Finite-Difference Time-Domain (FDTD) simulations show that the incident pulse can be slowed down without distortion owing to the low dispersion. The proposed compact configuration can avoid the distortion of signal pulse, and thus may find potential applications in plasmonic slow-light systems, especially optical buffers. &copy; 2012 Optical Society of America.

Number of references:32

Main heading:MIM devices

Controlled terms:Finite difference time domain method - Plasmons - Quantum optics - Waveguides

Uncontrolled terms:Analytical results - Broad bandwidths - Dispersionless - Electromagnetically induced transparency - Finite-difference time-domain simulation - Flat band - Group index - Incident pulse - Metal insulator metals - Optical buffer  - Plasmonic - Potential applications - Signal pulse - Unit cells - Waveguide systems

Classification code:712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 741.1 Light/Optics - 921 Mathematics

DOI:10.1364/OE.20.020902

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124715683155

Title:Color fractal structure model for reduced-reference colorful image quality assessment

Authors:He, Lihuo (1); Wang, Dongxue (1); Li, Xuelong (2); Tao, Dacheng (3); Gao, Xinbo (1); Gao, Fei (1)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, Shaanxi, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (3) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Broadway, NSW 2007, Australia

Corresponding author:He, L.(lihuo.he@gmail.com)

Source title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abbreviated source title:Lect. Notes Comput. Sci.

Volume:7664 LNCS

Issue:PART 2

Monograph title:Neural Information Processing - 19th International Conference, ICONIP 2012, Proceedings

Issue date:2012

Publication year:2012

Pages:401-408

Language:English

ISSN:03029743

E-ISSN:16113349

ISBN-13:9783642344800

Document type:Conference article (CA)

Conference name:19th International Conference on Neural Information Processing, ICONIP 2012

Conference date:November 12, 2012 - November 15, 2012

Conference location:Doha, Qatar

Conference code:93816

Sponsor:United Development Company PSC (UDC); Qatar Petrochemical Company; ExxonMobil; Qatar Petroleum; Texas A and M University at Qatar; Asia Pacific Neural Network Assembly

Publisher:Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany

Abstract:Developing reduced reference image quality assessment (RR-IQA) plays a vital role in dealing with the prediction of the visual quality of distorted images. However, most of existing methods fail to take color information into consideration, although the color distortion is significant for the increasing color images. To solve the aforementioned problem, this paper proposed a novel IQA method which focuses on the color distortion. In particular, we extract color features based on the model of color fractal structure. Then the color and structure features are mapped into visual quality using the support vector regression. Experimental results on the LIVE II database demonstrate that the proposed method has a good consistency with the human perception especially on images with color distortion. &copy; 2012 Springer-Verlag.

Number of references:10

Main heading:Color

Controlled terms:Data processing - Fractals - Image quality

Uncontrolled terms:Color distortions - Color features - Color images - Color information - Colorful images - Distorted images - Fractal structures - Human perception - Reduced reference - Reduced-reference image quality assessments  - RR-IQA - Statistical models - Structure features - Support vector regression (SVR) - Visual qualities

Classification code:723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921 Mathematics

DOI:10.1007/978-3-642-34481-7_49

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124015531515

Title:ADXRS401 angular velocity measurement system based on TMS320F2812 and AD7898

Authors:Guo, Zhihao (1); Liang, Yanbing (1)

Author affiliation:(1) Institute of the Optics and Precision Mechanics of, CAS, Xi'an, China

Corresponding author:Guo, Z.(guozhihao_2006@126.com)

Source title:Proceedings of 2012 International Conference on Modelling, Identification and Control, ICMIC 2012

Abbreviated source title:Proc. Int. Conf. Model., Identif. Control, ICMIC

Monograph title:Proceedings of 2012 International Conference on Modelling, Identification and Control, ICMIC 2012

Issue date:2012

Publication year:2012

Pages:377-382

Article number:6260220

Language:English

ISBN-13:9780956715715

Document type:Conference article (CA)

Conference name:2012 International Conference on Modelling, Identification and Control, ICMIC 2012

Conference date:June 24, 2012 - June 26, 2012

Conference location:Wuhan, China

Conference code:92903

Sponsor:IEEE Shanghai Section; International Journal of Modelling, Identification and Control; International Journal of Computer Applications and Technology; Huazhong University of Science and Technology; Wuhan University of Science and Technology

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:In order to measure the high precision simultaneous angular velocity of MEMS gyroscope, ADXRS401, we designed a stable and available simultaneous serial data acquisition system, which is mainly built based on TMS320F2812, DSP chip of TI, and AD7898, AD converter of ADI. AD7898 could convert analog signal to digital signal and transfer the collected data to TMS320F2812 by the serial port-Multichannel Buffered Serial PORT (McBSP). After the pretreatment of TMS320F2812, the collected data would be transferred to the PC by the module of wireless transmission. At last, the PC could draw the waveform graph of the collected data and calculate the minimum and maximum value. We could easily estimate the designed system good or not. After the joint debug of software and hardware, we could make it better meet the design requirements. The design of hardware interface circuits, design of software procedures, and debug of hardware and software etc. are described in this paper. &copy; 2012 Huazhong Univ of Sci &amp; Tec.

Number of references:8

Main heading:Program debugging

Controlled terms:Angular velocity - Design - Hardware - Identification (control systems) - Logic circuits - Measurements

Uncontrolled terms:AD7898 - ADXRS401 - Measurement system - MEMS gyroscope - TMS320F2812

Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 931.1 Mechanics - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 731.1 Control Systems - 721.3 Computer Circuits - 605 Small Tools and Hardware - 408 Structural Design - 723.1 Computer Programming

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20141517550851

Title:Dispersion-free quantum clock synchronization via fiber link

Authors:Hou, Fei-Yan (1); Dong, Rui-Fang (1); Quan, Run-Ai (1); Zhang, Yu (1); Bai, Yun (1); Liu, Tao (1); Zhang, Shou-Gang (1); Zhang, Tong-Yi (3)

Author affiliation:(1) Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xian 710600, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100039, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China

Corresponding author:Dong, R.-F.(dongruifang@ntsc.ac.cn)

Source title:Advances in Space Research

Abbreviated source title:Adv. Space Res.

Volume:50

Issue:11

Issue date:December 1, 2012

Publication year:2012

Pages:1489-1494

Language:English

ISSN:02731177

E-ISSN:18791948

CODEN:ASRSDW

Document type:Journal article (JA)

Publisher:Elsevier Ltd

Abstract:We proposed a fiber-based quantum clock synchronization protocol by employing the dispersion cancellation feature of the frequency anti-correlated entangled source under the quantum interference measurement. It is shown that, the accuracy of the synchronization is mainly dependent on the bandwidth of the frequency entangled biphoton spectrum and on the temperature variation induced fluctuations in both the reference fiber coiling and the fiber link. With this proposal, synchronization between two clocks at a distance of ten kilometers can be implemented with an accuracy below a picosecond. &copy; 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.

Number of references:29

Main heading:Quantum entanglement

Controlled terms:Dispersions - Fibers - Mechanical clocks

Uncontrolled terms:Dispersion-free - Fiber links - Frequency anti-correlated entanglement - Picoseconds - Quantum clock synchronizations - Quantum interference - Reference fibers - Temperature variation

Classification code:812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 931.4 Quantum Theory; Quantum Mechanics - 943.3 Special Purpose Instruments - 951 Materials Science

DOI:10.1016/j.asr.2012.07.029

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122915258664

Title:Single-shot parallel four-step phase shifting using on-axis Fizeau interferometry

Authors:Abdelsalam, D.G. (1); Yao, Baoli (1); Gao, Peng (1); Min, Junwei (1); Guo, Rongli (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Engineering and Surface Metrology Lab., National Institute of Standards, Tersa St., El haram, El Giza, Egypt; (3) Division of Mechanical System Engineering, Chonbuk National University, Jeonju 561-756, Korea, Republic of

Corresponding author:Yao, B.(yaobl@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:20

Issue date:July 10, 2012

Publication year:2012

Pages:4891-4895

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The purposes of the paper are threefold: (1) to show the possibility to perform parallel phase-shifting Fizeau interferometry by using a quarter waveplate with high flatness as a reference, (2) to present a comparative study between the phase-shifting algorithm and the off-axis geometry in surface microtopography measurement, and (3) to show the advantages of using the proposed common path Fizeau interferometry over the quasi-common path Michelson interferometry in terms of accuracy in measurement. The compelling advantage of the proposed parallel phase-shifting Fizeau interferometric technique is the long-term stability that leads to measuring objects with a high degree of accuracy. &copy; 2012 Optical Society of America.

Number of references:13

Main heading:Phase shift

Controlled terms:Interferometry - Michelson interferometers

Uncontrolled terms:Common path - Comparative studies - Fizeau Interferometry - High degree of accuracy - Interferometric techniques - Long term stability - Michelson interferometry - Off-axis geometry - Phase-shifting - Phase-shifting algorithm  - Quarter wave-plate - Single-shot - Surface microtopography

Classification code:941.3 Optical Instruments - 941.4 Optical Variables Measurements - 942.2 Electric Variables Measurements

DOI:10.1364/AO.51.004891

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121614954753

Title:Defect modes supported by optical lattices in photovoltaic-photorefractive crystals

Authors:Li, Kehao (1); Lu, Keqing (1); Guo, Jianbang (1); Chen, Weijun (3); Sun, Tongtong (3); Yao, Fengxue (3); Xu, Jingjun (4)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China; (3) School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China; (4) Department of Physics, Nankai University, Tianjin 300071, China

Corresponding author:Lu, K.(kqlu@opt.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:13-14

Issue date:June 15, 2012

Publication year:2012

Pages:3187-3190

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:We study defect modes in optically induced one-dimensional lattices in photovoltaic-photorefractive crystals. These defect modes exist in different bandgaps due to the change of defect intensity. For a positive defect, defect mode branches exist not only in the semi-infinite bandgap, but also in the first and second bandgaps. When the defect mode branch is fixed, the confinement of defect modes increases with the defect strength parameter. For a negative defect, defect mode branches exist only in the first and second bandgaps. For a given defect mode branch, the strongest confinement of the defect modes appears when the lattice intensity at the defect site is not the smallest in its branch. On the other hand, when the defect strength parameter is fixed, the most localized defect modes arise in the semi-infinite bandgap for the positive defect and in the first bandgap for the negative defect. &copy; 2012 Elsevier B.V. All rights reserved.

Number of references:20

Main heading:Defects

Controlled terms:Crystal lattices - Energy gap - Nonlinear optics - Optical materials - Photorefractive crystals - Photovoltaic effects

Uncontrolled terms:Defect mode - Defect sites - Localized defects - One-dimensional lattice - Optical lattices - Optically induced - Strength parameters

Classification code:423 Non Mechanical Properties and Tests of Building Materials - 741 Light, Optics and Optical Devices - 931.3 Atomic and Molecular Physics - 933.1.1 Crystal Lattice - 951 Materials Science

DOI:10.1016/j.optcom.2012.03.003

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122215063429

Title:Spectroscopic properties of new Yb<sup>3+</sup>-doped TeO <inf>2</inf>-ZnO-Nb<inf>2</inf>O<inf>5</inf> based tellurite glasses with high emission cross-section

Authors:Wang, Cuicui (1); Wang, Pengfei (2); Zheng, Ruilin (1); Xu, Shennuo (2); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Wei, W.(weiwei@njupt.edu.cn)

Source title:Optical Materials

Abbreviated source title:Opt Mater

Volume:34

Issue:9

Issue date:July 2012

Publication year:2012

Pages:1549-1552

Language:English

ISSN:09253467

CODEN:OMATET

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Novel Yb<sup>3+</sup>-doped TeO<inf>2</inf>-ZnO-Nb<inf>2</inf>O<inf>5</inf> based tellurite glasses with high stimulated emission cross-section were prepared by melt-quenching method, and their spectroscopic and gain properties were investigated by means of absorption spectrum, fluorescence decay curve and fluorescence emission spectrum. The results show that the stimulated emission cross-section of the Pb<sup>2+</sup>-doped glass increases with the increase of PbF<inf>2</inf> concentration. Toward the samples with co-existence of Pb <sup>2+</sup> and Zr<sup>4+</sup> ions, the stimulated emission cross-sections achieve 1.42 pm<sup>2</sup> and 1.48 pm<sup>2</sup> when PbF<inf>2</inf> concentrations are 2 mol% and 6 mol%, respectively. All these indicate that the Yb<sup>3+</sup>-doped TeO<inf>2</inf>-ZnO-Nb<inf>2</inf>O<inf>5</inf>-PbF <inf>2</inf>-ZrF<inf>4</inf> glasses are a good candidate working as an active laser media for solid lasers. &copy; 2012 Elsevier B.V. All rights reserved.

Number of references:34

Main heading:Glass

Controlled terms:Absorption spectra - Electromagnetic wave absorption - Emission spectroscopy - Fluorescence - Lead - Niobium oxide - Tellurium compounds - Ytterbium - Zinc oxide - Zirconium

Uncontrolled terms:Active laser media - Co-existence - Doped glass - Emission cross-section - Fluorescence decays - Fluorescence emission spectra - Gain properties - Melt quenching method - Spectroscopic property - Tellurite glass  - Tellurite-based glass

Classification code:804.2 Inorganic Compounds - 804 Chemical Products Generally - 741.1 Light/Optics - 812.3 Glass - 711 Electromagnetic Waves - 547.2 Rare Earth Metals - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals

DOI:10.1016/j.optmat.2012.03.026

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120514729484

Title:Temporal contrast enhancement of picosecond pulses based on phase-conjugate wave generation

Authors:Liang, S.G. (1); Liu, H.J. (1); Huang, N. (1); Sun, Q.B. (1); Wang, Y.S. (1); Zhao, W. (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Liu, H.J.(liuhongjun@opt.ac.cn)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:37

Issue:2

Issue date:January 15, 2012

Publication year:2012

Pages:241-243

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:A practical technique based on the phase-conjugate wave (PCW) generation is proposed to improve the temporal contrast of the picosecond pulses. Our theory predicts the temporal contrast of the picosecond pulses can be enhancedto about the cube of the temporal contrastof the input pulse via the PCW generation,in which the conversion efficiency from the incident pulse to the PCW is about 25%. In a proof-of-principle experiment, the temporal contrast of picosecond pulses was enhanced from 1.7 &times; 10<sup>3</sup> to 8.6 &times; 10<sup>8</sup> with the conversion efficiency of 10%. This technique is promising to effectively eliminate the background of the ultrashort and ultraintense laser pulses in the future. &copy; 2012 Optical Society of America.

Number of references:16

Main heading:Pulse generators

Controlled terms:Conversion efficiency - Ultrashort pulses

Uncontrolled terms:Incident pulse - Input pulse - Phase-conjugate - Pico-second pulse - Proof-of-principle experiments - Temporal contrast - Ultraintense laser pulse - Wave generation

Classification code:525.5 Energy Conversion Issues - 713.4 Pulse Circuits - 744.1 Lasers, General

DOI:10.1364/OL.37.000241

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120514725869

Title:Application of terahertz spectroscopy and molecular modeling in isomers investigation: Glucose and fructose

Authors:Zheng, Zhuan-Ping (1); Fan, Wen-Hui (1); Liang, Yu-Qing (1); Yan, Hui (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Fan, W.-H.(fanwh@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:7

Issue date:April 1, 2012

Publication year:2012

Pages:1868-1871

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Terahertz spectra of glucose and fructose have been measured by terahertz time-domain spectroscopy (THz-TDS) at room temperature. Because they have the same molecular formula, the differences of the THz spectra can be attributed to their molecular structures and the arrangement of molecules in unit cell. In this paper, gaseous-state theory has been employed to simulate the isolated molecule of these two isomers. The results indicate that experimental THz spectral features (0.5 - 4.0 THz) of glucose and fructose arise from the mixture of intramolecular and intermolecular modes, involving hydrogen bonds and covalent bonds, and with the intermolecular modes dominating. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:27

Main heading:Terahertz spectroscopy

Controlled terms:Fructose - Glucose - Hydrogen bonds - Isomers - Laser pulses

Uncontrolled terms:Intermolecular modes - Isolated molecules - Molecular formula - Room temperature - Spectral feature - Terahertz spectra - Terahertz time domain spectroscopy - THz-TDS - Unit cells

Classification code:744.1 Lasers, General - 801 Chemistry - 801.4 Physical Chemistry - 804 Chemical Products Generally - 804.1 Organic Compounds - 931.1 Mechanics

DOI:10.1016/j.optcom.2011.12.016

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20123615403607

Title:Modulation instability of bright photovoltaic solitons on a partially incoherent background

Authors:Zhang, M. (1); Huo, G. (2); Zhang, Y. (3); Kang, Y. (4); Duan, Z. (1)

Author affiliation:(1) School of Electronics Engineering, Xi'An University of Post and Telecommunication, Xi'an 710061, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710119, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'An Jiaotong University, Xi'an 710049, China; (4) School of Science, Air Force Engineering University, Xi'an 710051, China

Corresponding author:Zhang, M.(Meizhi-zhang@126.com)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:22

Issue:8

Issue date:August 2012

Publication year:2012

Pages:1295-1300

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:We present the observation of incoherent anti-dark photovoltaic solitons in LiNbO<inf>3</inf>:Fe crystal. This new class of soliton states involves bright photovoltaic solitons on a background beam meeting &kappa; &gt; 1, where &kappa; is the ratio of background illumination photovoltaic constant to that of soliton beam. For &kappa; &lt; 1, dark photovoltaic solitons are generated. Furthermore, this novel type solitons are investigated experimentally by injecting coherent light and partially coherent background of infinite extent. In case of spatial coherence of the background lower than the threshold of incoherent modulation instability, these results indicate that bright photovoltaic solitons can propagate in a stable fashion. &copy; Pleiades Publishing, Ltd., 2012.

Number of references:24

Main heading:Solitons

Controlled terms:Condensed matter physics - Lasers

Uncontrolled terms:Background illumination - Incoherent background - Incoherent modulation - Modulation instabilities - Partially coherent - Photovoltaic - Photovoltaic soliton - Soliton beams - Spatial coherence

Classification code:744.1 Lasers, General - 931 Classical Physics; Quantum Theory; Relativity - 931.3 Atomic and Molecular Physics - 933 Solid State Physics

DOI:10.1134/S1054660X12080178

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121114852826

Title:A new illuminating source for the ship wake detection

Authors:Tang, Jing (1); Xie, Zheng-Mao (1); He, Jun-Hua (1); Cang, Yu-Ping (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Corresponding author:Tang, J.(abcdmen@126.com)

Source title:Guangdianzi Jiguang/Journal of Optoelectronics Laser

Abbreviated source title:Guangdianzi Jiguang

Volume:23

Issue:2

Issue date:February 2012

Publication year:2012

Pages:408-412

Language:Chinese

ISSN:10050086

CODEN:GUJIE9

Document type:Journal article (JA)

Publisher:Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380, China

Abstract:The quality of bubble image is determined by the efficiency of underwater optical system in ship wake detection, while the illuminating source is an important factor that affects the performance of the underwater imaging system. A new sheet laser source is proposed in order to solve the problem, and the utilization rate and feasibility are analyzed and proved. The test results show that the new illuminating source can not only solve the lighting of the imaging system, but also avoid excess images overlapping within the depth region of the optical field. The proposed light source creates significant terms for acquiring the parameters of the bubble curtain. This new design can be used in under-water optical systems because of its unique advantages.

Number of references:15

Main heading:Ships

Controlled terms:Imaging systems - Light sources - Optical systems

Uncontrolled terms:Bubble curtain - Laser sources - New design - Optical field - Ship wake detection - Ship wakes - Utilization rates - View field

Classification code:671 Naval Architecture - 672 Naval Vessels - 674 Small Craft and Other Marine Craft - 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 746 Imaging Techniques

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121414920126

Title:Interactions of two humps of dipoles in anisotropic nonlinear media

Authors:Zhang, Yiqi (1); Zhang, Yanpeng (1); Zhang, Meizhi (3); Lu, Keqing (2)

Author affiliation:(1) Department of Electronic Science and Technology, Xian Jiaotong University, Xian 710049, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China; (3) School of Electronic Engineering, Xian University of Posts and Telecommunications, Xian 710061, China; (4) School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin 300160, China

Corresponding author:Zhang, Y.(zhang-yiqi@163.com)

Source title:Optics and Laser Technology

Abbreviated source title:Opt Laser Technol

Volume:44

Issue:6

Issue date:September 2012

Publication year:2012

Pages:1729-1732

Language:English

ISSN:00303992

CODEN:OLTCAS

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Propagation of dipoles and superposed dipoles in anisotropic nonlinear medium is investigated. The two humps of the dipoles will repel each other if attraction between them is smaller than repulsion, while if the former is larger than the latter, they attract. If there is phase gradient on the input dipoles or the energy distribution of the dipoles does not along the boundary directions of the medium, the dipoles will exhibit incomplete rotation during propagation. &copy; 2012 Elsevier Ltd. All rights reserved.

Number of references:16

Main heading:Anisotropy

Controlled terms:Nonlinear systems

Uncontrolled terms:Anisotropic - Beam propagation - Dipole - Energy distributions - Non-linear media - Nonlinear medium - Phase gradient

Classification code:921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids - 961 Systems Science

DOI:10.1016/j.optlastec.2012.01.028

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20131016087945

Title:Passively Q-switched Tm-doped fiber lasers with carbon nanotubes

Authors:Zhou, Wei (1); Wang, Yonggang (3); Li, Xiaohui (1); Long, Jingyu (1); Shen, Deyuan (1); Wang, Yishan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Department of Physics, Xi'an Jiaotong University, Xi'an 710049, China; (3) Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong, Hong Kong

Corresponding author:Shen, D.(shendy@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:10

Issue:SUPPL.2

Issue date:December 2012

Publication year:2012

Article number:S21411

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:We demonstrate a passively Q-switched Tm-doped fiber laser with carbon nantubes (CNTs), yielding a maximum output average power of around 82 mW and the corresponding pulse energy of 1.2 &mu;J. The laser operates at ~1.985 &mu;m with repetition rates ranging from 26 to 69 kHz and pulse-duration from 1.5 to 2.6 &mu;s. Our proposed laser shows that the CNTs are promising for the potential Q-switched Tm-doped fiber laser with high energy and tunable wavelength operation. To the best of our knowledge, this is the first report of a Q-switched Tm-doped fiber laser with CNTs as saturable absorber. &copy; 2012 Chinese Optics Letters.

Number of references:16

Main heading:Fiber lasers

Controlled terms:Pulse repetition rate - Q switching - Saturable absorbers

Uncontrolled terms:Average power - High energy - Maximum output - Passively Q-switched - Pulse durations - Pulse energies - Q-switched - Repetition rate - Tm-doped fiber laser - Tunable wavelength

Classification code:744 Lasers

DOI:10.3788/COL201210.S21411

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122915254971

Title:Control of ultrafast laser-induced bulk nanogratings in fused silica via pulse time envelopes

Authors:Mauclair, C. (1); Zamfirescu, M. (2); Colombier, J.P. (1); Cheng, G. (1); Mishchik, K. (1); Audouard, E. (1); Stoian, R. (1)

Author affiliation:(1) Laboratoire Hubert Curien, UMR 5516 CNRS, Universit&#233; de Lyon, 42000 Saint Etienne, France; (2) National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Bucharest, Romania; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, 710119 Xi'an, Shaanxi, China

Corresponding author:Mauclair, C.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:20

Issue:12

Issue date:June 4, 2012

Publication year:2012

Pages:12997-13005

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Employing a method of in-situ control we propose an approach for the optimization of self-arranged nanogratings in bulk fused silica under the action of ultrashort laser pulses with programmable time envelopes. A parametric study of the influence of the pulse duration and temporal form asymmetries is given. Using the diffraction properties of the laser-triggered subwavelength patterns we monitor and regulate the period and the quality of the periodic nanoscale arrangement via the effective nonlinear excitation dose. Periodicity tuning on tens of nanometers can be achieved by pulse temporal variations, with a minimum around 0.7 ps at the chosen powers. Equally, strong sensitivity to pulse asymmetries is observed. The driving factor is related to increasing carrier densities due to nonlinear confinement and the development of extended nanoroughness domains upon multiple exposure, creating a pulse-dependent effective accumulation dose via a morpho-dimensional effect. The result may impact the associated optical functions. &copy; 2012 Optical Society of America.

Number of references:17

Main heading:Ultrafast lasers

Controlled terms:Ultrashort pulses

Uncontrolled terms:Diffraction property - Driving factors - In-situ control - Laser induced - Multiple exposure - Nano scale - Nano-gratings - Nanoroughness - Nonlinear excitation - Optical function  - Parametric study - Pulse durations - Pulse time - Sub-wavelength - Temporal variation - Ultra-fast

Classification code:744.1 Lasers, General

DOI:10.1364/OE.20.012997

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121314898659

Title:Luminescence properties of Nd<sup>3+</sup>-doped LaF<inf>3</inf> nanocrystals with a long lifetime in organic solvents

Authors:Sun, Wenxiu (1); Cui, Xiaoxia (2); Wang, Zhongyue (1); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210046, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi 710119, China

Corresponding author:Cui, X.(cuixx@opt.ac.cn)

Source title:Journal of Materials Chemistry

Abbreviated source title:J. Mater. Chem.

Volume:22

Issue:14

Issue date:April 14, 2012

Publication year:2012

Pages:6990-6993

Language:English

ISSN:09599428

E-ISSN:13645501

CODEN:JMACEP

Document type:Journal article (JA)

Publisher:Royal Society of Chemistry, Milton Road, Cambridge, CB4 OWF, United Kingdom

Abstract:A kind of monodisperse LaF<inf>3</inf>:Nd nanocrystal with a small size and long lifetime in solvent was synthesized via a hydrothermal process. The crystalline phase, morphology, and luminescence properties were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), emission spectroscopy as well as dynamic decays. The results indicated that LaF <inf>3</inf>:Nd nanocrystals with a size below 30 nm have great dispersity in various solvents. An excellent lifetime of 359 &mu;s was detected in a transparent DMSO-tetrabromoethane dispersion. It suggested that these nanocrystals could have great applications in biological and optical amplification fields. &copy; The Royal Society of Chemistry 2012.

Number of references:22

Main heading:Nanocrystals

Controlled terms:Emission spectroscopy - Luminescence - Luminescence of inorganic solids - Neodymium - Organic solvents - Transmission electron microscopy - X ray diffraction

Uncontrolled terms:Crystalline phase - Dispersity - Hydrothermal process - Long lifetime - Luminescence properties - Monodisperse - Optical amplifications - Small size - Transmission electron microscopy (TEM)

Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 931.3 Atomic and Molecular Physics

DOI:10.1039/c2jm15891d

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20120814779255

Title:Analysis and study of static pressure distribution in an optical cable spool using distributed fiber Bragg gratings

Authors:Ren, Liyong (1); Ma, Chengju (1); Tang, Feng (3); Qu, Enshi (1); Han, Xu (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Xi'an Shiyou University, Xi'an 710065, China; (3) Xi'an Institute of Modern Control Technology, Xi'an 710065, China

Corresponding author:Ren, L.(renliy@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8351

Monograph title:Third Asia Pacific Optical Sensors Conference

Issue date:2012

Publication year:2012

Article number:835119

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819490278

Document type:Conference article (CA)

Conference name:3rd Asia Pacific Optical Sensors Conference

Conference date:January 31, 2012 - February 3, 2012

Conference location:Sydney, NSW, Australia

Conference code:88448

Sponsor:Engineers Australia

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:We present a theoretical model to study the static pressure distribution among the layers of an optical fiber cable spool based on the force analysis of the cable system. Using the distributed fiber Bragg grating (FBG) sensing technique, the static pressures within the fiber cable layers of the spool were measured according to the Bragg wavelength shifts of the FBGs embedded in the cable. The effects of the cable spool shrinkage owing to the pressure from outer fiber cable layers on the cable tension and the radial pressure were analyzed in detail. As a result, the relationship between the static pressure upon the fiber and the resulted Bragg wavelength shift of the FBG was deduced. The static pressure distribution of the fiber optical cable spool is obtained both in theory and experiment. Theoretical simulations coincide with experimental results. This technology provides us a real-time method to monitor the inner pressure among the fiber cable layers during the optical cable winding process. &copy; 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:13

Main heading:Fiber Bragg gratings

Controlled terms:Cables - Fibers - Optical cables - Optical sensors - Pressure - Pressure distribution - Reels

Uncontrolled terms:Bragg wavelength shift - Cable systems - Cable tension - fiber Bragg grating (FBG) - Fiber cables - Fiber optical cables - Force analysis - Inner pressure - optical fiber cable spool - Radial direction  - Radial pressure - Sensing techniques - Static pressure - Static pressure distributions - Theoretical models - Theoretical simulation - Winding process

Classification code:931.1 Mechanics - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 741.1.2 Fiber Optics - 535 Rolling, Forging and Forming

DOI:10.1117/12.913783

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124315591025

Title:Theoretical study on instantaneous linewidth of Fourier-domain mode-locked fiber lasers

Authors:Tu, Chenghou (1); Deng, Yixin (1); Cai, Mengqiang (1); Huang, Zhangchao (1); Li, Yongnan (1); Lu, Fuyun (1); Li, Enbang (3)

Author affiliation:(1) School of Physics, Nankai University, Tianjin 300071, China; (2) State Key Laboratory of Transient Optics and Photonics Technology, Xi'An Institute of Optics and PrecisionMechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (3) School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China

Corresponding author:Tu, C.(tuchenghou@nankai.edu.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:24

Issue date:November 1, 2012

Publication year:2012

Pages:5287-5292

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:We have numerically simulated the operation of the Fourier-domain mode-locked (FDML) fiber laser based on the wavelength reconstruction method instead of numerical solving the nonlinear Schro&die;dinger equation. We studied the influences of the filter bandwidth and the relative time delay caused by the fiber chromatic dispersion on the instantaneous linewidth of the FDML fiber laser. The results show that the instantaneous linewidth broadens as the filter bandwidth and the relative time delay increase. When the filter has the bandwidth of 0.02 nm, the narrowest and broadest instantaneous linewidths are 0.024 and 0.042 nm, respectively. We give an understanding for the oscillation of the instantaneous linewidth of FDML. The presented result can be used to evaluate the performance achievable in the FDML fiber lasers. &copy; 2012 Elsevier B.V. All rights reserved.

Number of references:17

Main heading:Linewidth

Controlled terms:Bandwidth - Fiber lasers - Fourier transforms - Mode-locked fiber lasers - Nonlinear equations - Numerical methods

Uncontrolled terms:Dinger equation - Fiber chromatic dispersion - Filter bandwidth - Fourier-domain - Fourier-domoain - Mode-locked - Modelocking - Reconstruction method - Relative time - Theoretical study

Classification code:716.1 Information Theory and Signal Processing - 744.1 Lasers, General - 744.4 Solid State Lasers - 921 Mathematics - 931.3 Atomic and Molecular Physics

DOI:10.1016/j.optcom.2012.06.072

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121514937037

Title:A robust random number generator based on differential comparison of chaotic laser signals

Authors:Zhang, Jianzhong (1); Wang, Yuncai (1); Liu, Ming (1); Xue, Lugang (1); Li, Pu (1); Wang, Anbang (1); Zhang, Mingjiang (1)

Author affiliation:(1) Institute of Optoelectronic Engineering, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan. 030024, China; (2) Xi'An Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'An 710119, China

Corresponding author:Zhang, J.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:20

Issue:7

Issue date:March 26, 2012

Publication year:2012

Pages:7496-7506

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We experimentally realize a robust real-time random number generator by differentially comparing the signal from a chaoticsemiconductor laser and its delayed signal through a 1-bit analog-to-digital converter. The probability density distribution of the output chaotic signal based on the differential comparison method possesses an extremely smallcoefficient of Pearson's median skewness (1.5 &times; 10 -6), which can yield a balanced random sequence much easily than the previously reported method that compares the signal from the chaotic laser with a certain threshold value. Moveover, we experimently demonstrate that our method can stably generate good random numbers at rates of 1.44 Gbit/s with excellent immunity from external perturbations while the previously reported method fails. &copy; 2012 Optical Society of America.

Number of references:21

Main heading:Random number generation

Controlled terms:Optical constants - Optics

Uncontrolled terms:Analog to digital converters - Chaotic lasers - Chaotic signal - Comparison methods - External perturbations - Probability density distribution - Random number generators - Random Numbers - Random sequence

Classification code:741.1 Light/Optics - 922.2 Mathematical Statistics

DOI:10.1364/OE.20.007496

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20135217143050

Title:Experimental study on the imaging of the squeezed-state light with a virtual object

Authors:Lu, Baozhu (1); Bi, Siwen (1); Feng, Fei (1); Kang, Menghua (1); Qin, Fei (2)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, State Key Laboratory of Transient Optics and Photonics, Xi'an 710119, China; (2) Villanova University, Department of Electrical and Computer Engineering, 800 E. Lancaster Avenue, Villanova, PA 19085, United States

Source title:Optical Engineering

Abbreviated source title:Opt Eng

Volume:51

Issue:11

Issue date:November 2012

Publication year:2012

Article number:119001

Language:English

ISSN:00913286

E-ISSN:15602303

CODEN:OPEGAR

Document type:Journal article (JA)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:A stable amplitude squeezed-state light was generated by utilizing the nondegenerate optical parametric amplifier based on periodically poled KTiOPO<inf>4</inf> crystal at 1064 nm. We observed -4.93 dB of squeezing with a local oscillator phase locked in homodyne measurement. The imaging experiments of the resolution target have shown that the imaging resolution, which was based on squeezed-state light, is 1.41 times as much as the resolution that was acquired using coherent light as light source. In addition, the squeezed-state light was applied for imaging of the virtual object. It was found that the characters on the board were much more easily discerned with squeezed light as a light source than with coherent light. This result paves the way for further improvements of imaging resolution by use of the squeezed-state light. &copy; 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:19

Main heading:Image resolution

Controlled terms:Coherent light - Imaging systems - Light amplifiers - Light sources - Optical parametric amplifiers - Optical resolving power

Uncontrolled terms:Homodyne measurements - Imaging experiments - Imaging resolutions - Local oscillators - Nondegenerate optical parametric amplifier - Periodically poled - Squeezed state - Virtual objects

Classification code:714 Electronic Components and Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 741 Light, Optics and Optical Devices - 742 Cameras and Photography - 746 Imaging Techniques

DOI:10.1117/1.OE.51.11.119001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121214883199

Title:Particle filter with fine resampling for Bearings-Only Tracking

Authors:Cao, Bei (1); Ma, Caiwen (1); Liu, Zhentao (3)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an 710119, China; (2) Graduate School of Chinese Academy of Science, Beijing 100039, China; (3) Xi'an University of Post and Telecommunications, Xi'an 710061, China

Corresponding author:Cao, B.(bbflyer@163.com)

Source title:Procedia Engineering

Abbreviated source title:Procedia Eng.

Volume:29

Monograph title:2012 International Workshop on Information and Electronics Engineering

Issue date:2012

Publication year:2012

Pages:3685-3690

Language:English

ISSN:18777058

Document type:Conference article (CA)

Conference name:2012 International Workshop on Information and Electronics Engineering, IWIEE 2012

Conference date:March 10, 2012 - March 11, 2012

Conference location:Harbin, China

Conference code:89020

Sponsor:Harbin University of Science and Technology; International Science and Engineering Research Center

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:To solve the nonlinear filtering problem in the Bearings-Only Tracking (BOT), an improved particle filter with fine resampling is proposed, called as PF-FR (Particle Filter with Fine Resampling). By introducing distance-comparing process and generating new particle based on optimized combination scheme, PF-FR filter performs better than generic PF-SIR filter both in terms of effectiveness and diversity of the particle system, hence, evidently enhancing tracking accuracy in bearings-only tracking problem. Simulations indicate that the proposed PF-FR algorithm is effective. &copy; 2011 Published by Elsevier Ltd.

Number of references:8

Main heading:Target tracking

Controlled terms:Electronics engineering - Nonlinear filtering - Optimization

Uncontrolled terms:Bearings-only tracking - Fine resampling - Improved particle filter - Non-linear filtering problems - Optimized combination - Particle filter - Particle systems - Resampling - Tracking accuracy

Classification code:921.5 Optimization Techniques - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 713 Electronic Circuits

DOI:10.1016/j.proeng.2012.01.553

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20123715431575

Title:Latest progress and development trends of time-resolved streak camera technology

Authors:Wang, Chao (1); Tian, Jinshou (1); Kang, Yifan (2); Wang, Tao (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Air Force Engineering University, Xi'an 710051, China

Corresponding author:Wang, C.(igodwang@gmail.com)

Source title:Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology

Abbreviated source title:Zhenkong Kexue yu Jishu Xuebao

Volume:32

Issue:7

Issue date:July 2012

Publication year:2012

Pages:653-660

Language:Chinese

ISSN:16727126

CODEN:CKKSDV

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The latest progress in the time-resolved streak camera technologies was tentatively reviewed in a though provoking way. The discussions followed two outlines. One focused on the perspective of time-resolution and the innovations in the field of ultra-fast diagnostics in transient sciences were discussed. The o Ther centered on the technical applications and the road-map of time-resolved streak camera technologies was described, including many of the knowledge innovations of the two-color pump-probe atto-second streak camera, based on the diagnostic techniques of the conventional image-converter streak camera. The possible development trends and potential applications of the atto-second streak camera technologies in observing the ultra fast events occurred in the fascinating microscopic world were also discussed.

Number of references:32

Main heading:Streak cameras

Controlled terms:Innovation - Technology

Uncontrolled terms:Attosecond-Zepto-second - Camera technology - Cross correlations - Development trends - Diagnostic techniques - Knowledge innovation - Potential applications - Pump-probe - Roadmap - Technical applications  - Time resolution - Time-resolved - Two-color - Ultra-fast

Classification code:742.2 Photographic Equipment - 901 Engineering Profession - 912 Industrial Engineering and Management

DOI:10.3969/j.issn.1672-7126.2012.07.21

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124515650471

Title:Soliton mode locking fiber laser with an all-fiber polarization interference filter

Authors:Yan, Zhijun (1); Wang, Hushan (1); Zhou, Kaiming (1); Wang, Yishan (2); Li, Cheng (2); Zhao, Wei (2); Zhang, Lin (1)

Author affiliation:(1) Institute of Photonic and Technologies, Aston University, Birmingham, B4 7ET, United Kingdom; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yan, Z.(yanz1@aston.ac.uk)

Source title:Optics Letters

Abbreviated source title:Opt. Lett.

Volume:37

Issue:21

Issue date:November 1, 2012

Publication year:2012

Pages:4522-4524

Language:English

ISSN:01469592

E-ISSN:15394794

CODEN:OPLEDP

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:An erbium doped fiber ring laser achieving soliton mode locking by the use of an intra-cavity all-fiber polarization interference filter (AFPIF) has been demonstrated. To incorporate an AFPIF with relative narrow transmission bandwidth, the laser has produced clean soliton pulses of 1.2 ps duration at a repetition rate of 14.98 MHz with a polarization extinction ratio up to 25.7 dB. Moreover, we have demonstrated that the operating wavelength of the mode locking laser can be tuned over 20 nm range from 1545 to 1565 nm by thermally tuning the AFPIF cavity. &copy; 2012 Optical Society of America.

Number of references:15

Main heading:Solitons

Controlled terms:Erbium - Fiber lasers - Polarization - Ring lasers

Uncontrolled terms:All fiber - Erbium doped fiber ring lasers - Intracavities - Mode-locking fiber laser - Operating wavelength - Polarization extinction ratio - Polarization interferences - Repetition rate - Transmission bandwidth

Classification code:547.2 Rare Earth Metals - 711.1 Electromagnetic Waves in Different Media - 744 Lasers - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics

DOI:10.1364/OL.37.004522

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20123015284613

Title:Robust reversible watermarking via clustering and enhanced pixel-wise masking

Authors:An, Lingling (1); Gao, Xinbo (1); Li, Xuelong (1); Tao, Dacheng (1); Deng, Cheng (2); Li, Jie (3)

Author affiliation:(1) School of Electronic Engineering, Xidian University, Xi'an 710071, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Center for Quantum Computation and Intelligent Systemsa, Faculty of Engineering and Information Technology, University of Technology, Sydney NSW 2007, Australia

Corresponding author:An, L.(an.lingling@gmail.com)

Source title:IEEE Transactions on Image Processing

Abbreviated source title:IEEE Trans Image Process

Volume:21

Issue:8

Issue date:2012

Publication year:2012

Pages:3598-3611

Article number:6172574

Language:English

ISSN:10577149

CODEN:IIPRE4

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Robust reversible watermarking (RRW) methods are popular in multimedia for protecting copyright, while preserving intactness of host images and providing robustness against unintentional attacks. However, conventional RRW methods are not readily applicable in practice. That is mainly because: 1) they fail to offer satisfactory reversibility on large-scale image datasets; 2) they have limited robustness in extracting watermarks from the watermarked images destroyed by different unintentional attacks; and 3) some of them suffer from extremely poor invisibility for watermarked images. Therefore, it is necessary to have a framework to address these three problems, and further improve its performance. This paper presents a novel pragmatic framework, wavelet-domain statistical quantity histogram shifting and clustering (WSQH-SC). Compared with conventional methods, WSQH-SC ingeniously constructs new watermark embedding and extraction procedures by histogram shifting and clustering, which are important for improving robustness and reducing run-time complexity. Additionally, WSQH-SC includes the property-inspired pixel adjustment to effectively handle overflow and underflow of pixels. This results in satisfactory reversibility and invisibility. Furthermore, to increase its practical applicability, WSQH-SC designs an enhanced pixel-wise masking to balance robustness and invisibility. We perform extensive experiments over natural, medical, and synthetic aperture radar images to show the effectiveness of WSQH-SC by comparing with the histogram rotation-based and histogram distribution constrained methods. &copy; 1992-2012 IEEE.

Number of references:50

Main heading:Pixels

Controlled terms:Digital watermarking - Graphic methods - Speech intelligibility - Watermarking

Uncontrolled terms:Constrained method - Conventional methods - Extraction procedure - Histogram shifting - Host images - Image datasets - Integer wavelet transforms - k-means-means clustering - Pixel wise masking - Reversible watermarking  - Runtimes - Statistical quantity - Synthetic aperture radar (SAR) images - Underflows - Watermark embedding - Watermarked images

Classification code:461.4 Ergonomics and Human Factors Engineering - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 811.1.1 Papermaking Processes

DOI:10.1109/TIP.2012.2191564

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 49>

 

Accession number:20121614954744

Title:Analysis of temporal broadening of optical pulses by atmospheric dispersion in laser communication system

Authors:Lu, Hongqiang (1); Zhao, Wei (1); Xie, Xiaoping (1)

Author affiliation:(1) Xi'An Institute of Applied Optics, Xi'an 710065, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Lu, H.(lhq555@gmail.com)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:13-14

Issue date:June 15, 2012

Publication year:2012

Pages:3169-3173

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:In this paper, pulse broadening caused by atmospheric dispersion is analyzed, which is the key factor in high-speed and long-distance free space laser communication systems according to our simulation. The measured datum of atmospheric parameters, including atmospheric pressure and atmospheric temperature of the desert in Xinjiang, China, is used in the analysis of pulses broadening. The pulse broadening caused by atmospheric dispersion is very significant when pulsewidth is on the order of 5 ps, and pulse broadening is negligible if the pulsewidth is larger than 20 ps. With the increment of optical wavelength, atmospheric dispersion-induced pulse broadening is mitigated. The received pulsewidth is dominated mainly by dispersion-induced pulse broadening at small duty ratio of original signal, and original pulsewidth at large duty ratio of original signal respectively. By selecting proper duty ratio of optical pulse, the received pulsewidth can be minimized and the system bit rate can be maximized. &copy; 2012 Elsevier B.V. All rights reserved.

Number of references:19

Main heading:Laser pulses

Controlled terms:Atmospheric pressure - Integrated optics - Optical links - Telecommunication systems

Uncontrolled terms:Atmospheric dispersion - Atmospheric parameters - Bit rates - Duty ratios - Free space laser communication systems - Free space laser communications - High-speed - Key factors - Measured data - Optical wavelength  - Original signal - Pulse broadening - Pulsewidths - Temporal broadening - Xinjiang

Classification code:443.1 Atmospheric Properties - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 741.3 Optical Devices and Systems - 744.1 Lasers, General

DOI:10.1016/j.optcom.2012.02.094

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 50>

 

Accession number:20121514940821

Title:Synthesis and optical properties of Nd(III) perfluoro-carboxylate complexes with 2, 2'-bipyridine

Authors:She, Jiang-Bo (1); Li, Dong-Dong (2); Wang, Peng-Fei (1); Zhu, Yong-Gang (1); Wei, Wei (3); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710061, China; (3) Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Corresponding author:Wei, W.

Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi

Volume:32

Issue:4

Issue date:April 2012

Publication year:2012

Pages:1047-1050

Language:Chinese

ISSN:10000593

CODEN:GYGFED

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:A series of neodymium complexes, Nd(CF<inf>3</inf>COO)<inf>3</inf>&middotDipy, Nd(C<inf>2</inf>F<inf>5</inf>COO)<inf>3</inf>&middotDipy and Nd(C<inf>3</inf>F<inf>7</inf>COO)<inf>3</inf>&middotDipy were synthesized and characterized by FTIR spectra, elemental analysis, thermogravimetric analysis, UV-Vis-NIR absorption spectra and PL spectra. The decomposition temperature was found to be more than 260&deg;C and maximum weight losses rates above 340&deg;C which indicate that they have good thermal stability. The low vibrational energy C-F bonds were used to replace the C-H bonds in organic group for improving the optical properties of materials. The length of carbon chain and the coordination structure of Nd(III) affect the absorption transition strength. According to the UV-Vis-NIR absorption spectra, the Judd-Ofelt parameters were calculated and the radiative properties were also presented. The stimulated emission cross-sections of the Nd(CF<inf>3</inf>COO)<inf>3</inf>&middotDipy, Nd(C<inf>2</inf>F<inf>5</inf>COO)<inf>3</inf>&middotDipy and Nd(C<inf>3</inf>F<inf>7</inf>COO)<inf>3</inf>&middotDipy were 3.63&times;10<sup>-20</sup>, 2.36&times;10<sup>-20</sup> and 1.49&times;10<sup>-20</sup> cm<sup>2</sup> respectively, which were as good as some reported inorganic materials. These complexes will be a series of promising materials for liquid laser application.

Number of references:12

Main heading:Neodymium

Controlled terms:Carboxylation - Chemical analysis - Conductive plastics - Electromagnetic wave absorption - Fourier transform infrared spectroscopy - Infrared devices - Judd-Ofelt theory - Liquid lasers - Neodymium compounds - Optical properties  - Stimulated emission - Synthesis (chemical) - Thermogravimetric analysis

Uncontrolled terms:2 ,2'-Bipyridine - Absorption transitions - C-F bonds - C-H bond - Carbon chains - Coordination structures - Decomposition temperature - Emission cross section - FT-IR spectrum - Inorganic materials  - Judd-Ofelt parameters - Optical properties of materials - Organic group - PL spectra - Radiative properties - Stimulated emission cross-sections - UV-Vis-NIR absorption - Vibrational energies - Weight loss

Classification code:817.1 Polymer Products - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801 Chemistry - 931.3 Atomic and Molecular Physics - 744.3 Liquid Lasers - 741.1 Light/Optics - 711 Electromagnetic Waves - 547.2 Rare Earth Metals - 741.3 Optical Devices and Systems

DOI:10.3964/j.issn.1000-0593(2012)04-1047-04

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 51>

 

Accession number:20124615663836

Title:Camera design in ultra-low temperature vessel

Authors:Li, Wu (1); Cao, Jian-Zhong (1); Yan, A-Qi (1); Wu, Deng-Shan (1); Zhang, Zhao-Hui (1); Zhang, Hai-Feng (1); Zhu, Qing (1); Dong, Sen (1); Zhang, Jian (1)

Author affiliation:(1) Xi'An Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China

Corresponding author:Li, W.(wulisunrise@163.com)

Source title:Proceedings - 2012 International Conference on Computer Science and Information Processing, CSIP 2012

Abbreviated source title:Proc. - Int. Conf. Comput. Sci. Inf. Process., CSIP

Monograph title:Proceedings - 2012 International Conference on Computer Science and Information Processing, CSIP 2012

Issue date:2012

Publication year:2012

Pages:359-363

Article number:6308868

Language:English

ISBN-13:9781467314114

Document type:Conference article (CA)

Conference name:2012 International Conference on Computer Science and Information Processing, CSIP 2012

Conference date:August 24, 2012 - August 26, 2012

Conference location:Xi'an, Shaanxi, China

Conference code:93714

Sponsor:Xi'an Technological University; IEEE Xi'an Section; Missouri Western State University; Natl. New Netw. Monit. Control Eng. Lab.

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:According to special application, surveillance camera working in the ultra-low temperature and high pressure vessel is designed. By request of optics and electronics system on temperature, research focus on the design from selection of the structure material, thermal insulation, the adaptability of optical system in the ultra-low temperature and high pressure environment. Finally, It is confirmed that opto-Mechanical structure with double layers thermal insulation of PIPA and ITO optical window have benefit on thermal insulation for the camera working in this ultra-low temperature(196&deg;C) and high pressure(0.5MPa) environment. All the opto-Mechanical material which may be contact with ultra-low high pressure liquid can also be consistent with liquid. &copy; 2012 IEEE.

Number of references:13

Main heading:Temperature

Controlled terms:Cameras - Computer science - Data processing - High pressure engineering - Imaging systems - Optical systems - Security systems - Thermal insulation

Uncontrolled terms:Camera design - Double layers - Electronics system - High pressure - High-pressure environment - High-pressure liquid - High-pressure vessel - ITO - Low temperatures - Optical window  - Optomechanical - Special applications - Structure materials - Surveillance cameras - Ultra low temperatures

Classification code:901 Engineering Profession - 742.2 Photographic Equipment - 741.3 Optical Devices and Systems - 723.2 Data Processing and Image Processing - 914.1 Accidents and Accident Prevention - 723 Computer Software, Data Handling and Applications - 721 Computer Circuits and Logic Elements - 641.1 Thermodynamics - 413.2 Heat Insulating Materials - 722 Computer Systems and Equipment

DOI:10.1109/CSIP.2012.6308868

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124315591219

Title:Formation and evolution of passively mode-locked fiber soliton lasers operating in a dual-wavelength regime

Authors:Mao, Dong (1); Lu, Hua (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Mao, D.(maodong@opt.ac.cn)

Source title:Journal of the Optical Society of America B: Optical Physics

Abbreviated source title:J Opt Soc Am B

Volume:29

Issue:10

Issue date:October 1, 2012

Publication year:2012

Pages:2819-2826

Language:English

ISSN:07403224

CODEN:JOBPDE

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:The formation and evolution of dual-wavelength solitons in passively mode-locked fiber soliton lasers are investigated both numerically and experimentally. By solving the Ginzburg-Landau equation and taking the gain profile into account, mode-locked soliton emissions at 1532 and 1555 nm are achieved simultaneously. Numerical results show that the two solitons exhibit the same intensity and duration, indicating that the dual-wavelength pulses possess the soliton energy quantization effect. In the process of pulse-pulse collisions, two solitons pass through each other and maintain their properties, qualitatively distinct from single-wavelength solitons that never overlap each other. The dual-wavelength mode-locked operation evolves into single-wavelength mode locking with the decrease of the pumping strength. The dual-peak gain spectrum of erbium-doped fiber and the birefringence-induced cavity filtering effect play crucial roles in the formation of dual-wavelength solitons. Numerical results agree well with analytical solutions and experimental observations. Our study provides an optional method of measuring the fiber dispersion by means of the dual-wavelength solitons. &copy; 2012 Optical Society of America.

Number of references:47

Main heading:Solitons

Controlled terms:Fibers - Passive mode locking

Uncontrolled terms:Dual-wavelength - Erbium doped fibers - Experimental observation - Fiber dispersion - Filtering effects - Gain spectra - Ginzburg-Landau equations - Mode-locked - Numerical results - Passively mode-locked  - Single wavelength - Soliton energy quantization - Soliton laser

Classification code:744.1 Lasers, General - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 931.3 Atomic and Molecular Physics

DOI:10.1364/JOSAB.29.002819

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 53>

 

Accession number:20120514724069

Title:Nonrigid structure-from-motion from 2-d images using markov chain monte carlo

Authors:Zhou, Huiyu (1); Li, Xuelong (2); Sadka, Abdul H. (3)

Author affiliation:(1) ECIT, Queen's University Belfast, Belfast, BT3 9DT, United Kingdom; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, Shaanxi 710119, China; (3) School of Engineering and Design, Brunel University, Uxbridge, United Kingdom

Corresponding author:Zhou, H.(H.Zhou@ecit.qub.ac.uk)

Source title:IEEE Transactions on Multimedia

Abbreviated source title:IEEE Trans Multimedia

Volume:14

Issue:1

Issue date:February 2012

Publication year:2012

Pages:168-177

Article number:6032104

Language:English

ISSN:15209210

CODEN:ITMUF8

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper we present a new method for simultaneously determining 3-D shape and motion of a nonrigid object from uncalibrated 2-D images without assuming the distribution characteristics. A nonrigid motion can be treated as a combination of a rigid rotation and a nonrigid deformation. To seek accurate recovery of deformable structures, we estimate the probability distribution function of the corresponding features through random sampling, incorporating an established probabilistic model. The fitting between the observation and the projection of the estimated 3-D structure will be evaluated using a Markov chain Monte Carlo based expectation maximization algorithm. Applications of the proposed method to both synthetic and real image sequences are demonstrated with promising results. &copy; 2006 IEEE.

Number of references:40

Main heading:Monte Carlo methods

Controlled terms:Algorithms - Deformation - Distribution functions - Markov processes - Probability distributions - Three dimensional

Uncontrolled terms:3-D shape - 3D structures - Deformable structures - Distribution characteristics - Expectation-maximization algorithms - Markov chain Monte Carlo - Non-rigid deformation - Non-rigid motion - Non-rigid objects - nonrigid  - Probabilistic models - Random sampling - Real image sequences - Rigid rotation - structure from motion - uncalibrated

Classification code:922.2 Mathematical Statistics - 922.1 Probability Theory - 921 Mathematics - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties

DOI:10.1109/TMM.2011.2170406

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 54>

 

Accession number:20131216134086

Title:The design of high performance tracking system based on multi TMS320C6678

Authors:Wu, Min (1); Su, Xiu-Qin (2)

Author affiliation:(1) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (2) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi An Institute of Optics and Precision Mechanics of CAS, Xi an 710119, China

Corresponding author:Wu, M.(wumin@opt.ac.cn)

Source title:2012 5th International Congress on Image and Signal Processing, CISP 2012

Abbreviated source title:Int. Congr. Image Signal Process., CISP

Monograph title:2012 5th International Congress on Image and Signal Processing, CISP 2012

Issue date:2012

Publication year:2012

Pages:1348-1351

Article number:6470025

Language:English

ISBN-13:9781467309622

Document type:Conference article (CA)

Conference name:2012 5th International Congress on Image and Signal Processing, CISP 2012

Conference date:October 16, 2012 - October 18, 2012

Conference location:Chongqing, China

Conference code:96020

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:A high performance TMS320C6678 DSP, which contains 8 1.25 GHZ C66 corepacs and four channels of SRIO, was developed. Then we use 4 TMS320C6678 and FPFA to design a high-performance tracking system platform, which is a completely a new-generation tracking system compared to the traditional systems for its multi-core DSP array and all kinds of high-speed series interfaces. The FPGA mainly do controlling tasks and the DSPs accomplish the complex tracking algorithm. At last we designed two other system architectures applying to different requirement for future use. &copy; 2012 IEEE.

Number of references:5

Main heading:Tracking (position)

Controlled terms:Field programmable gate arrays (FPGA) - Signal processing

Uncontrolled terms:high performance - new generation - System architectures - TMS320C6678 - Tracking system

Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 721.3 Computer Circuits

DOI:10.1109/CISP.2012.6470025

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 55>

 

Accession number:20130716008349

Title:Optical system design of full-disc magnetic field telescope

Authors:Zhao, Yiyi (1); Yang, Jianfeng (1); Ma, Xiaolong (1); Yan, Xingtao (1)

Author affiliation:(1) CAS, Xi'an Institute of Optics and Precision Mechanics, China; (2) School of Chinese Academy of Science, Xi'an, China

Corresponding author:Zhao, Y.(zyzjlx@gmail.com)

Source title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Abbreviated source title:Proc. - Int. Symp. Comput. Intell. Des., ISCID

Volume:2

Monograph title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Issue date:2012

Publication year:2012

Pages:290-293

Article number:6405997

Language:English

ISBN-13:9780769548111

Document type:Conference article (CA)

Conference name:2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Conference date:October 28, 2012 - October 29, 2012

Conference location:Hangzhou, China

Conference code:95304

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:Full-Disc magnetic field telescope is an important instrument for astronomical observations.In order to meet the optical performance of the full-Disc magnetic field Telescope and the harsh coupling conditions of its filters, determined the optical parameters of the optical system by calculation. According to the calculation of the optical parameters, we puts forward a feasible optical structure which can make the system more compact under the premise of meeting the telescope In optical properties and filters coupling conditions. For the system, we have adopted the basic Idea of modular design, and the overall system is divided Into several subsystems were designed. The results show that the maximum wave front distortion(pv) of the system of all field of view Is 0.1327; the value of MTF at the spatial frequency of 67 Ip/mm is higher than 0.45 in every field. The Image quality of the system approximates to the dlffractive limit. &copy; 2012 IEEE.

Number of references:7

Main heading:Optical telescopes

Controlled terms:Artificial intelligence - Magnetic fields - Optical design - Optical properties - Optical systems - Optical variables control - Telescopes

Uncontrolled terms:Coupling condition - Field of views - Modular designs - Optical parameter - Optical performance - Optical structures - Solar magnetic fields - Spatial frequency - Wavefront distortion

Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 723.4 Artificial Intelligence - 741.1 Light/Optics - 741.3 Optical Devices and Systems

DOI:10.1109/ISCID.2012.224

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 56>

 

Accession number:20114614520924

Title:Robust lossless data hiding using clustering and statistical quantity histogram

Authors:An, Lingling (1); Gao, Xinbo (1); Yuan, Yuan (3); Tao, Dacheng (4)

Author affiliation:(1) VIPS Lab, School of Electronic Engineering, Xidian University, Xi'an, 710071, China; (2) Key Lab. of Intelligent Perception and Image Understanding of Ministry of Education of China, Xidian University, Xi'an 710071, China; (3) Center for Optical Imagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, Shaanxi, China; (4) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney, Broadway, NSW 2007, Australia

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:77

Issue:1

Issue date:01 February 2012

Publication year:2012

Pages:1-11

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Lossless data hiding methods usually fail to recover the hidden messages completely when the watermarked images are attacked. Therefore, the robust lossless data hiding (RLDH), or the robust reversible watermarking technique, is urgently needed to effectively improve the recovery performance. To date a couple of methods have been developed; however, they have such drawbacks as poor visual quality and low capacity. To solve this problem, we develop a novel statistical quantity histogram shifting and clustering-based RLDH method or SQH-SC for short. The benefits of SQH-SC in comparison with existing typical methods include: (1) strong robustness against lossy compression and random noise due to the usage of k-means clustering; (2) good imperceptibility and reasonable performance tradeoff due to the consideration of the just noticeable distortion of images; (3) high capacity due to the flexible adjustment of the threshold; and (4) wide adaptability and good stability to different kinds of images. Extensive experimental studies based on natural images, medical images, and synthetic aperture radar (SAR) images demonstrate the effectiveness of the proposed SQH-SC. &copy; 2011.

Number of references:31

Main heading:Steganography

Controlled terms:Digital watermarking - Graphic methods - Imaging systems - Medical imaging - Synthetic aperture radar

Uncontrolled terms:Experimental studies - Flexible adjustment - Good stability - Hidden messages - High capacity - Just noticeable distortion - K-means clustering - Lossless data hiding - Lossy compressions - Medical images  - Natural images - Performance trade-off - Random noise - Recovery performance - Reversible watermarking - Statistical quantity - Statistical quantity histogram - Synthetic aperture radar images - Visual qualities - Watermarked images

Classification code:716.2 Radar Systems and Equipment - 723.2 Data Processing and Image Processing - 723.5 Computer Applications

DOI:10.1016/j.neucom.2011.06.012

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 57>

 

Accession number:20131116105481

Title:A study on identification and suppressing algorithm of FOG's random noise

Authors:Yuan, Hui (1); Liu, Zhaohui (2); Liang, Dongsheng (3); Cui, Kai (1)

Author affiliation:(1) Department of Optical Engineering, University of Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (3) Department of Optical Engineering, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China

Corresponding author:Yuan, H.(yuanhui@opt.cn)

Source title:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Abbreviated source title:IEEE Int. Conf. Adv. Comput. Intell., ICACI

Monograph title:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Issue date:2012

Publication year:2012

Pages:1195-1199

Article number:6463365

Language:English

ISBN-13:9781467317436

Document type:Conference article (CA)

Conference name:2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012

Conference date:October 18, 2012 - October 20, 2012

Conference location:Nanjing, China

Conference code:95872

Sponsor:IEEE Nanjing Section

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:In this paper, the Allan variance technique is used in analyzing the output signal of a fiber optic gyroscope, by which the characteristics of the noise terms in the angular velocity data was determined. Then we process the random drift data of the FOG with a Kalman Filter based on the theory of time series analysis. On the other hand, an LMS adaptive filter is also applied to the random drift data. Comparative analysis on the filtering effect and their advantages and disadvantages of both algorithms is carried out. The results show both algorithms has a certain role on suppressing the random drift of the gyroscope, and the LMS adaptive filter is more effective and has a better adaptability in practice. &copy; 2012 IEEE.

Number of references:8

Main heading:Gyroscopes

Controlled terms:Adaptive filters - Algorithms - Artificial intelligence - Fiber optics - Time series analysis

Uncontrolled terms:Allan variance - Comparative analysis - Fiber optic gyroscopes - Filtering effects - LMS adaptive filters - Noise terms - Output signal - Random drift - Random noise

Classification code:943.1 Mechanical Instruments - 922.2 Mathematical Statistics - 921 Mathematics - 741.1.2 Fiber Optics - 731.1 Control Systems - 723.4 Artificial Intelligence - 723 Computer Software, Data Handling and Applications

DOI:10.1109/ICACI.2012.6463365

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 58>

 

Accession number:20124415622962

Title:Design of 30&times; middle infrared continuous zoom system

Authors:Jiang, Kai (1); Zhou, Sizhong (1); Wang, Yanbin (1); Duan, Jing (1); Zhang, Hengjin (1); Li, Gang (1)

Author affiliation:(1) The Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Jiang, K.(jiangkai2008.jj@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:41

Issue:8

Issue date:August 2012

Publication year:2012

Pages:2162-2166

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:On the basis of a cool 320 &times; 240 detector with staring focal plane array, a set of 30&times; middle infrared continuous zoom system was designed. The structural selection and the initial parameter calculation were introduced in detail. Two common infrared materials of Si and Ge were used. To correct off axis aberration, aspheric was accepted. The design results prove that the system works at 3.7-4.8 &mu;m, achieving the zoom of 30-900 mm, large zoom ratio of 30&times; and F number of 4. At the spatial frequency of 16 lp/mm, the system's MTF value is greater than 0.5. The system can offer a high resolution and excellent images in whole range of the focal length, and its cold shield efficiency is 100%. And it has the advantages of a large zoom ratio, compact structure and short optical length. The system satisfies the design requirements.

Number of references:7

Main heading:Optical design

Controlled terms:Germanium

Uncontrolled terms:Cold shield - Compact structures - Continuous zoom - Design requirements - F number - Focal lengths - High resolution - Infrared material - Infrared systems - Initial parameter  - Large zoom ratio - Middle infrared - Off-axis - Optical length - Spatial frequency - Structural determination - Zoom systems

Classification code:741.1 Light/Optics - 804 Chemical Products Generally

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 59>

 

Accession number:20121114853069

Title:Optical design of off-axis three-mirror anastigmatic system for imaging spectrometer

Authors:Wang, Meiqin (1); Wang, Zhonghou (1); Bai, Jiaguang (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China; (2) Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wang, M.(wangmeiqin.1984@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:41

Issue:1

Issue date:January 2012

Publication year:2012

Pages:167-172

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Imaging spectrometer requires its optical system have high spatial resolution and spectral resolution over wide field of view and waveband range. A design method for unobstructed, off-axis, reflective optical system was proposed. When pupil and field of view were off-axis properly, obstructing between mirrors was avoided based on the three-mirror anastigmatic. According to the parameters, the unobstructed, off-axis three-mirror anastigmatic systems were designed, when the aperture stop was in front of primary mirror, or on the secondary mirror or focal point of third mirror. The optical system has a spectral region from 1.0 &mu;m to 2.5 &mu;m, focal length of 1600 mm, relative aperture of f&prime;/5, field of view of angle of 6.86&deg;&times;1.48&deg;. Their imaging qualities reach the diffraction limit and meet the requirements of the imaging spectrometer's optical system, which has wide field of view and large relative aperture.

Number of references:10

Main heading:Optical systems

Controlled terms:Mirrors - Optical design - Spectrometers - Spectrometry - Systems analysis

Uncontrolled terms:Aspheric surfaces - Design method - Diffraction limits - Field of views - Focal lengths - Focal points - High spatial resolution - Imaging quality - Imaging spectrometer - Imaging spectrometers  - Off-axis - Primary mirrors - Reflective optical system - Secondary mirror - Spectral region - Three-mirror anastigmatic systems - Wavebands - Wide field of view

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 961 Systems Science

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124715702023

Title:High precision edge detecting algorithm and realization of linear CCD based on FPGA

Authors:Gao, Lina (1); Hu, Xiaodong (2)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy Sciences, Xi'an, 710019, China; (2) Graduate School of Chinese Academy Sciences, Beijing100049, China

Corresponding author:Hu, X.(hxd@opt.ac.cn)

Source title:Advances in Information Sciences and Service Sciences

Abbreviated source title:Adv. Inf. Sci. Serv. Sci.

Volume:4

Issue:20

Issue date:November 2012

Publication year:2012

Pages:318-325

Language:English

ISSN:19763700

E-ISSN:22339345

Document type:Journal article (JA)

Publisher:Advanced Institute of Convergence Information Technology, Myoungbo Bldg 3F,, Bumin-dong 1-ga, Seo-gu, Busan, 602-816, Korea, Republic of

Abstract:In order to improve the precision and speed of the linear CCD edge detecting system, in this paper, we proposed a new digital system which was used to detect the sub-pixel edge of the picture based on FPGA. Firstly, the CCD signal had been filtered by average filter before it entered the edge detecting system; secondly, the pixel edge can be detected by the algorithm that was used to detect the edge of the picture automatically, because the grads of grey scale breaks at the edge of the picture; lastly, cubic polynomials algorithm was used to detect the sub-pixel edge of picture. The edge detecting algorithm based on FPGA was designed with VHDL and Quartus II software, and the precision of the edge detecting algorithm was simulated and testes by using of MATLAB. The simulation and test results proved that the edge detecting algorithm in this paper had the characteristic of high precision, speed, and integration.

Number of references:11

Main heading:Algorithms

Controlled terms:Field programmable gate arrays (FPGA) - MATLAB

Uncontrolled terms:Average filter - Cubic polynomials - Digital system - Edge detecting - Edge detecting algorithm - Grey scale - High precision - Linear CCD - Quartus II - Sub pixels

Classification code:721.3 Computer Circuits - 723 Computer Software, Data Handling and Applications - 921 Mathematics

DOI:10.4156/AISS.vol4.issue20.38

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20122115046909

Title:Detection of sudden pedestrian crossings for driving assistance systems

Authors:Xu, Yanwu (1); Xu, Dong (1); Lin, Stephen (2); Han, Tony X. (3); Cao, Xianbin (4); Li, Xuelong (5)

Author affiliation:(1) School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore; (2) Microsoft Research Asia, Beijing 100080, China; (3) Department of Electrical and Computer Engineering, University of Missouri, Columbia, MO 65211, United States; (4) School of Electrical Information Engineering, Beihang University, Beijing 100191, China; (5) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Xu, Y.(ywxu@ntu.edu.sg)

Source title:IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics

Abbreviated source title:IEEE Trans Syst Man Cybern Part B Cybern

Volume:42

Issue:3

Issue date:2012

Publication year:2012

Pages:729-739

Article number:6093757

Language:English

ISSN:10834419

CODEN:ITSCFI

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:In this paper, we study the problem of detecting sudden pedestrian crossings to assist drivers in avoiding accidents. This application has two major requirements: to detect crossing pedestrians as early as possible just as they enter the view of the car-mounted camera and to maintain a false alarm rate as low as possible for practical purposes. Although many current sliding-window-based approaches using various features and classification algorithms have been proposed for image-/video-based pedestrian detection, their performance in terms of accuracy and processing speed falls far short of practical application requirements. To address this problem, we propose a three-level coarse-to-fine video-based framework that detects partially visible pedestrians just as they enter the camera view, with low false alarm rate and high speed. The framework is tested on a new collection of high-resolution videos captured from a moving vehicle and yields a performance better than that of state-of-the-art pedestrian detection while running at a frame rate of 55 fps. &copy; 2012 IEEE.

Number of references:43

Main heading:Crosswalks

Controlled terms:Cameras - Errors - Footbridges - Intelligent vehicle highway systems - Video signal processing

Uncontrolled terms:A-frames - Application requirements - Camera view - Classification algorithm - Coarse to fine - Driving assistance systems - False alarm rate - High resolution - Moving vehicles - Pedestrian detection  - Performance evaluation - Processing speed - spatiotemporal refinement - Three-level

Classification code:406.1 Highway Systems - 406.2 Roads and Streets - 716.4 Television Systems and Equipment - 731 Automatic Control Principles and Applications - 742.2 Photographic Equipment - 921 Mathematics

DOI:10.1109/TSMCB.2011.2175726

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 62>

 

Accession number:20125015786481

Title:Sideband-controllable mode-locking fiber laser based on chirped fiber Bragg gratings

Authors:Han, Dongdong (1); Liu, Xueming (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Han, D.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:20

Issue:24

Issue date:November 19, 2012

Publication year:2012

Pages:27045-27050

Language:English

E-ISSN:10944087

Document type:Conference article (CA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We have proposed a sideband-controllable fiber soliton laser by means of chirped fiber Bragg gratings (CFBGs). Each side of the spectral sidebands of laser could be removed by using a CFBG with proper dispersion. Numerical simulations have well reproduced the experimental observations. The numerical and experimental investigations show that the generation of the unilateral sidebands is attributed to the CFBG-induced spectral filtering effect. Our work provides an effective way to manage conventional solitons with spectral sidebands. &copy; 2012 Optical Society of America.

Number of references:23

Main heading:Solitons

Controlled terms:Fiber lasers - Lasers

Uncontrolled terms:Chirped fiber Bragg grating - Experimental investigations - Experimental observation - Mode-locking fiber laser - Soliton laser - Spectral filtering - Spectral sidebands

Classification code:744.1 Lasers, General - 744.4 Solid State Lasers - 931.3 Atomic and Molecular Physics

DOI:10.1364/OE.20.027045

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 63>

 

Accession number:20124615670471

Title:Dynamic and quantitative phase-contrast imaging of living cells under simulated zero gravity by digital holographic microscopy and superconducting magnet

Authors:Pan, Feng (1); Liu, Shuo (1); Wang, Zhe (2); Shang, Peng (2); Xiao, Wen (1)

Author affiliation:(1) Key Laboratory of Precision Opto-mechatronics Technology, School of Instrument Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China; (2) Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China

Corresponding author:Pan, F.(panfeng@buaa.edu.cn)

Source title:Laser Physics

Abbreviated source title:Laser Phys.

Volume:22

Issue:9

Issue date:September 2012

Publication year:2012

Pages:1435-1438

Language:English

ISSN:1054660X

E-ISSN:15556611

Document type:Journal article (JA)

Publisher:Maik Nauka-Interperiodica Publishing, Profsoyuznaya Ul 90, Moscow, 117997, Russia

Abstract:The experiment of dynamic and quantitative phase-contrast imaging of living cells in simulated zero gravity environment were performed by using digital holographic microscopy (DHM) combined with a superconducting magnet (SM). The SM with large gradient high magnetic field was used to simulate zero gravity by levitating biological living samples. The proposed DHM system provided highly efficient and versatile means for dynamically and quantitatively phase-contrast imaging MC3T3-E1 cells. To our knowledge, the phase images of living cells undergoing modifications and division under simulated zero gravity were firstly obtained by using DHM-SM prototype. &copy; Pleiades Publishing, Ltd., 2012.

Number of references:13

Main heading:Microscopic examination

Controlled terms:Phase measurement - Superconducting magnets

Uncontrolled terms:Digital holographic microscopy - High magnetic fields - Living cell - MC3T3-E1 cell - Phase image - Phase-contrast imaging - Zero gravity

Classification code:708.4 Magnetic Materials - 746 Imaging Techniques - 942.2 Electric Variables Measurements

DOI:10.1134/S1054660X12090125

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 64>

 

Accession number:20121014832676

Title:Optimizing the phase-matching parameters of a BIBO crystal for ultrafast spontaneous parametric down conversion

Authors:Huo, Guang-Wen (1); Zhang, Tong-Yi (1); Wan, Ren-Gang (1); Zhang, Mei-Zhi (2); Cheng, Guang-Hua (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Electronics Engineering, Xi'an University of Post and Telecommunication, Xi'an 710061, China

Corresponding author:Zhang, T.-Y.(tyzhang@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8333

Monograph title:Photonics and Optolectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration

Issue date:2012

Publication year:2012

Article number:833313

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819489906

Document type:Conference article (CA)

Conference name:Photonics and Optolectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration

Conference date:November 2, 2011 - November 5, 2011

Conference location:Wuhan, China

Conference code:88800

Sponsor:Huazhong University of Science and Technology; China Hubei Provincial Science and Technology Department; Wuhan East Lake Natl. Innov. Model Zone, Opt. Val. China (OVC); The Optical Society; Hubei Provincial Foreign Experts Affairs Bureau

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:We analyze and optimize the parameters of the Type I spontaneous parametric down-conversion (SPDC) process in BiB<inf>3</inf>O<inf>6</inf> (BIBO) crystal directly from calculations. This can be used to construct a system to generate ultrafast entangled photon pairs, which play an important role in quantum communication, quantum positioning, and quantum clock synchronization. Our work on the problem makes it clear that the optimal phase matching orientation in the process of SPDC is a key mechanism in the BIBO crystal in a way that appears not to have been appreciated before. In the case of &omega; = 0.405 &mu;m , the numerical results of the optimization parameters at room temperature ( 295 K ) are:&theta; = 152.00&deg;,&phi; = 90&deg;, and d<inf>eff</inf> = 3.48 pm/V. Finally, we use a pair of 0.6 mm thick biaxial BIBO crystals to construct an ultrafast entangled photon source, where the crystals are stacked together perpendicularly and pumped by a 405 nm pulsed laser doubling from a Tsunami mode-locked Ti:sapphire laser. &copy; 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:34

Main heading:Crystal orientation

Controlled terms:Elementary particle sources - Optical frequency conversion - Optical pumping - Optimization - Optoelectronic devices - Phase matching - Quantum communication - Quantum entanglement

Uncontrolled terms:Entangled photon pairs - Entangled photons - Mode-locked - Numerical results - Optimization parameter - Quantum clock synchronizations - Room temperature - SPDC - Spontaneous parametric down-conversion - Ti: Sapphire laser  - Ultra-fast

Classification code:933.1.1 Crystal Lattice - 931.4 Quantum Theory; Quantum Mechanics - 931.3 Atomic and Molecular Physics - 921.5 Optimization Techniques - 741 Light, Optics and Optical Devices - 716 Telecommunication; Radar, Radio and Television - 713 Electronic Circuits

DOI:10.1117/12.918955

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 65>

 

Accession number:20120614753604

Title:Similarity learning for object recognition based on derived kernel

Authors:Li, Hong (1); Wei, Yantao (2); Li, Luoqing (3); Yuan, Yuan (4)

Author affiliation:(1) School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, China; (2) Institute for Pattern Recognition and Artificial Intelligence, Huazhong University of Science and Technology, Wuhan 430074, China; (3) Faculty of Mathematics and Computer Science, Hubei University, Wuhan 430062, China; (4) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Yuan, Y.(yuany@opt.ac.cn)

Source title:Neurocomputing

Abbreviated source title:Neurocomputing

Volume:83

Issue date:April 15, 2012

Publication year:2012

Pages:110-120

Language:English

ISSN:09252312

E-ISSN:18728286

CODEN:NRCGEO

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:Recently, derived kernel method which is a hierarchical learning method and leads to an effective similarity measure has been proposed by Smale. It can be used in a variety of application domains such as object recognition, text categorization and classification of genomic data. The templates involved in the construction of the derived kernel play an important role. To learn more effective similarity measure, a new template selection method is proposed in this paper. In this method, the redundancy is reduced and the label information of the training images is used. In this way, the proposed method can obtain compact template sets with better discrimination ability. Experiments on four standard databases show that the derived kernel based on the proposed method achieves high accuracy with low computational complexity. &copy; 2012 Elsevier B.V.

Number of references:34

Main heading:Object recognition

Controlled terms:Text processing

Uncontrolled terms:Derived kernel - Hierarchical learning - Image similarity - Neural response - Template selection

Classification code:716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications

DOI:10.1016/j.neucom.2011.12.005

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 66>

 

Accession number:20122815226366

Title:All-fiber dissipative solitons evolution in a compact passively Yb-doped mode-locked fiber laser

Authors:Li, Xiaohui (1); Wang, Yishan (1); Zhao, Wei (1); Liu, Xianglian (1); Wang, Yonggang (3); Tsang, Yuen Hong (3); Zhang, Wei (1); Hu, Xiaohong (1); Yang, Zhi (1); Gao, Cunxiao (1); Li, Cheng (1); Shen, Deyuan (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Xi'an Jiaotong University, Xi'an 710049, China; (3) Department of Applied Physics, Materials Research Centre, Hong Kong PolytechnicUniversity, Hung Hom, Hong Kong

Corresponding author:Li, X.(lixiaohui1983@opt.ac.cn)

Source title:Journal of Lightwave Technology

Abbreviated source title:J Lightwave Technol

Volume:30

Issue:15

Issue date:2012

Publication year:2012

Pages:2502-2507

Article number:6204196

Language:English

ISSN:07338724

CODEN:JLTEDG

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:Compact all-fiber all-normal dispersion Yb-doped fiber ring laser is demonstrated based on nonlinear polarization rotation technique. Dissipative solitons (DSs) with bell-shaped spectra are observed in the fiber cavity with linear chirps for the first time to our knowledge. Stable pulse width is 9.7 ps with the pulse energy of 1.2 nJ, which can be compressed to near the transformed limited pulse duration of 225 fs. The experimental result agrees well with the numerical simulations. The theoretical modeling indicates that the formation of the bell-shaped spectra is due to the combined effect of normal dispersion, nonlinearity, gain, loss, and spectral filtering effect. Different from the pulse evolution in the mode-locked fiber laser based on the wave plate and the birefringent plate, conventional DSs with rectangular-shaped spectra can be obtained by varying the polarization orientation of the cavity. &copy; 1983-2012 IEEE.

Number of references:28

Main heading:Fibers

Controlled terms:Bells - Compaction - Fiber lasers - Mode-locked fiber lasers - Polarization - Ring lasers - Solitons - Ytterbium

Uncontrolled terms:All fiber - Birefringent plates - Combined effect - Dissipative solitons - Fiber cavity - Linear chirp - Non-Linearity - Nonlinear polarization rotation - Normal dispersion - Polarization orientation  - Pulse durations - Pulse energies - Pulse evolution - Pulsewidths - Spectral filtering - Theoretical modeling - Waveplates - Yb-doped fibers

Classification code:817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 752.1 Acoustic Devices - 931.3 Atomic and Molecular Physics - 744 Lasers - 547.2 Rare Earth Metals - 536.1 Powder Metallurgy Operations - 711.1 Electromagnetic Waves in Different Media

DOI:10.1109/JLT.2012.2201210

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20124415622964

Title:Design of 8&times; dual field of view zoom and large relative aperture infrared hybrid refractive-diffractive system

Authors:Xu, Liang (1); Zhao, Jianke (1); Zhou, Yan (1); Liu, Feng (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Xu, L.(xuliang757@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:41

Issue:8

Issue date:August 2012

Publication year:2012

Pages:2173-2177

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:A set of 8-12 &mu;m infrared hybrid refractive-diffractive dual field of view zoom system was designed based on the triturating requirement of the photoelectric tracking system. The system broke through the flaw that the conventional system always had small relative aperture, small zoom ratio and complex structure. A simple dual field of view system with large relative aperture and high zoom ratio was designed. DOE was used to calibrate the chromatic aberration and temperature difference by its internal characteristics. Ge and ZnS were utilized to calibrate the spherochromatic aberration. The final designed result was that F# was 1.1(relative aperture), and the zoom ratio is 8&times;. The result indicates that the MTF is above 0.55 abroad and narrow field of view which is at the spatial frequency of 18 lp/mm, and the MTF is approaching to the diffraction limit. The energy permeance ratio is greater than 78.5% when the system receiving radius in the detecting sensor is smaller than 15 &mu;m. It shows that the imaging quality of the zoom system is very good, and it calibrates the temperature difference in real circumstance of the application.

Number of references:12

Main heading:Aberrations

Controlled terms:Diffraction - Germanium - Optical design - Zinc sulfide

Uncontrolled terms:Chromatic aberration - Complex structure - Conventional systems - Detecting sensors - Diffraction limits - Field of views - Hybrid refractive-diffractive system - Imaging quality - Internal characteristics - MTF  - Spatial frequency - Spherochromatic aberration - Temperature differences - Tracking system - Zoom systems

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 804 Chemical Products Generally - 804.2 Inorganic Compounds

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 68>

 

Accession number:20131416168306

Title:Electric field distribution characteristics of photoconductive antennas

Authors:Zou, Sheng-Wu (1); Zhang, Tong-Yi (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing, 100039, China

Corresponding author:Zhang, T.-Y.(tyzhang@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8419

Monograph title:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy

Issue date:2012

Publication year:2012

Article number:84190A

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819491015

Document type:Conference article (CA)

Conference name:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy

Conference date:April 26, 2012 - April 29, 2012

Conference location:Xiamen, China

Conference code:96277

Sponsor:The Chinese Optical Society (COS); Inst. Opt. Electron. (IOE), Chinese Acad. Sci. (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Photoexcitation of biased semiconductor photoconductive antennas by femtosecond pulses is the most common and convenient technique for generating strong terahertz (THz) pulses. In this paper, we use the three-dimensional (3D) finite-difference-time-domain (FDTD) to analyze electric field distribution of THz pulses in the near-field from a photoconductive antenna. The simulation is based on solving Maxwell's equations and the carrier rate equations simultaneously on realistic dipole antenna structures. The 3D FDTD simulation gives detailed features of THz electric field distribution in and out of the antenna. It is found that the difference of near-field distribution between the substrate and free space is considerably large. The fields of the alternating-current dipole exhibit an unsymmetrical distribution and a large deviation from those calculated using the simple Hertzian dipole theory. The magnitude of THz field in and out of the substrate attenuates rapidly while it holds the line in the gap center. The high-frequency components of THz radiation emission come only from the dipole antenna, while the low-frequency components are from both the center electrodes and coplanar stripline waveguide. This work can be used to optimize the design of antenna geometry and raise the radiation field power. &copy; 2012 SPIE.

Number of references:22

Main heading:Three dimensional computer graphics

Controlled terms:Dipole antennas - Electric fields - Electromagnetic pulse - Manufacture - Maxwell equations - Microwave antennas - Optoelectronic devices - Photoexcitation - Terahertz waves - Testing

Uncontrolled terms:Electric field distributions - FDTD - Finite difference time-domain - High frequency components - Low-frequency components - Near-field distribution - Photoconductive antennas - Unsymmetrical distribution

Classification code:801.4 Physical Chemistry - 723.5 Computer Applications - 717.2 Optical Communication Equipment - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves - 701.1 Electricity: Basic Concepts and Phenomena - 701 Electricity and Magnetism - 537.1 Heat Treatment Processes - 423.2 Non Mechanical Properties of Building Materials: Test Methods

DOI:10.1117/12.956431

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 69>

 

Accession number:20123615390752

Title:A slot micro/nano fiber with elliptical low-index core

Authors:Zhang, Wenfu (1); Mu, Jian-Wei (2); Huang, Wei-Ping (3); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Microphotonics Center, Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; (3) Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

Corresponding author:Zhang, W.(wfuzhang@opt.ac.cn)

Source title:IEEE Photonics Journal

Abbreviated source title:IEEE Photon. J.

Volume:4

Issue:5

Issue date:2012

Publication year:2012

Pages:1610-1621

Article number:6269981

Language:English

ISSN:19430655

Document type:Journal article (JA)

Publisher:Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box 1331, Piscataway, NJ 08855-1331, United States

Abstract:A slot micro/nano optical fiber with elliptical low-index core, referred to as the elliptical-slot micro/nano fiber (ESMNF), is studied systematically in great detail in this paper. It is demonstrated that the ESMNF can confine most of the light in the low-index region and hence lead to large field enhancement. Benefiting from the large low-index power confinement factor and the field enhancement, the ESMNF also yields significant nonlinearity enhancement by the proper selection of materials. In addition, large birefringence between the two fundamental polarized modes is observed, due to the breakage of the circular symmetry for the core. The nonlinearity and low-index confinement properties of a more practical elliptical-slot embedded suspended microstructure fiber are also studied. &copy; 2012 IEEE.

Number of references:40

Main heading:Fibers

Controlled terms:Fiber optics - Nonlinear optics - Optical fiber fabrication - Optical fibers

Uncontrolled terms:Circular symmetry - Confinement factor - Confinement properties - Fiber design and fabrication - Field enhancement - Large birefringence - Microstructure fibers - Non-Linearity - Non-linearity enhancement - Polarized modes

Classification code:741.1.1 Nonlinear Optics - 741.1.2 Fiber Optics - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications

DOI:10.1109/JPHOT.2012.2212241

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

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Accession number:20121514939405

Title:Review on quantum clock synchronization schemes

Authors:Yao, Yin-Ping (1); Zhang, Tong-Yi (1); Wan, Ren-Gang (1); Zhao, Wei (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China; (2) Graduate School of Chinese Academy of Sciences, Beijing, 100039, China

Corresponding author:Yao, Y.-P.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8332

Monograph title:Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging

Issue date:2012

Publication year:2012

Article number:833202

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819489890

Document type:Conference article (CA)

Conference name:Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging

Conference date:November 2, 2011 - November 5, 2011

Conference location:Wuhan, China

Conference code:89281

Sponsor:Huazhong University of Science and Technology; China Hubei Provincial Science and Technology Department; Wuhan East Lake Natl. Innov. Model Zone, Opt. Val. China (OVC); The Optical Society; Hubei Provincial Foreign Experts Affairs Bureau

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Accurate remote clock synchronization is the backbone of applications such as high-accuracy satellite navigation, digital and/or cryptographic communication systems, space-based interferometric surveillance, coherent distributed-aperture sensing at high frequencies, and geolocation. During the last decade, several clock synchronization schemes have been proposed based on quantum mechanical concepts. Quantum clock synchronization promises more precision and better security. In this paper, the various proposed quantum clock synchronization schemes are reviewed. We compare and discuss several different quantum clock synchronization schemes. The advantages and disadvantages of these schemes are investigated with emphasis on the application in space-based satellite navigation systems. &copy; 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:23

Main heading:Mechanical clocks

Controlled terms:Communication systems - Quantum entanglement - Quantum theory - Satellite navigation aids

Uncontrolled terms:Clock Synchronization - Geolocations - High frequency - High-accuracy - Quantum algorithms - quantum clock synchronization - Quantum clock synchronizations - Quantum interference - Quantum mechanical - Satellite navigation  - Satellite navigation systems - Space-based

Classification code:655.2 Satellites - 716 Telecommunication; Radar, Radio and Television - 931.4 Quantum Theory; Quantum Mechanics - 943.3 Special Purpose Instruments

DOI:10.1117/12.918844

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 71>

 

Accession number:20121514938105

Title:Analytical and experimental demonstration of depth of field extension for incoherent imaging system with a standard sinusoidal phase mask

Authors:Zhao, Hui (1); Li, Yingcai (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Corresponding author:Zhao, H.(zhaohui@opt.ac.cn)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:10

Issue:3

Issue date:March 2012

Publication year:2012

Article number:031101

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:The wavefront coding technique is used to enlarge the depth of field (DOF) of incoherent imaging systems. The key to wavefront coding lies in the design of suitable phase masks. To date, numerous kinds of phase masks are proposed. However, further understanding is needed regarding phase mask with its phase function being in a standard sinusoidal form. Therefore, the characteristics of such a phase mask are studied in this letter. Deriving the defocused optical transfer function (OTF) analytically proves that the standard sinusoidal phase mask is effective in extending the DOF, and actual experiments confirm the numerical results. At the same time, with the Fisher information as a criterion, the standard sinusoidal phase mask shows a higher tolerance to focus errors (especially severe focus errors) than the classical cubic phase mask. &copy; 2012 Chinese Optics Letters.

Number of references:14

Main heading:Optical design

Controlled terms:Errors - Fisher information matrix - Imaging systems - Optical transfer function - Standards

Uncontrolled terms:Actual experiments - Cubic phase mask - Depth of field - Fisher information - Incoherent imaging - Numerical results - Phase functions - Phase masks - Wavefront coding

Classification code:922 Statistical Methods - 921 Mathematics - 902.2 Codes and Standards - 746 Imaging Techniques - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731 Automatic Control Principles and Applications

DOI:10.3788/COL201210.031101

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 72>

 

Accession number:20131416173323

Title:Study on the precision measurement of high-flux large aperture sampling grating

Authors:Yuan, Hao-Yu (1); Chen, Yong-Quan (2); Peng, Zhi-Tao (1); Duan, Ya-Xuan (2); Wu, Jian-Hong (3); Fu, Shao-Jun (4)

Author affiliation:(1) Research Center of Laser Fusion of CAEP Sichuan, Mianyang 621900, China; (2) Xian Institute of Optics and Precision, Mechanics of CAS, China; (3) Soochow University, China; (4) University of Science and Technology of China, China

Corresponding author:Yuan, H.-Y.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8417

Monograph title:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Issue date:2012

Publication year:2012

Article number:84170W

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819490995

Document type:Conference article (CA)

Conference name:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

Conference date:April 26, 2012 - April 29, 2012

Conference location:Xiamen, China

Conference code:96275

Sponsor:The Chinese Optical Society (COS); Inst. Opt. Electron. (IOE), Chinese Acad. Sci. (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:This paper describes an effective method for the measurements of large aperture sampling grating, the sampling efficiency the sampling focal length and the sampling angle. By using a 351nm collimation laser source to scan the full aperture of the sampling grating in every subregion, the diffraction power of "0" order and "+1" order can be obtained synchronously by two standard integrating balls, And then by calculating the sampling efficiency of this subregion and splicing the acquisition data, we can get the averaged grating sampling efficiency in the full aperture.Based on this method, we can effectively eliminate the effect of the output instability of laser source, decrease the uncertainty of test results. According to the fabrication principle of the sampling grating, measurements for the sampling focal length and the sampling angle can be performed. Test rersults indicate that this method can be used to measure large aperture sampling gratings. &copy; 2012 SPIE.

Number of references:5

Main heading:Diffraction gratings

Controlled terms:Data integration - Efficiency - Manufacture - Optical testing - Phase structure

Uncontrolled terms:Focal lengths - Full apertures - Large aperture - Laser sources - Measurements of - Precision measurement - Sampling efficiency - Two-dimensional scanning

Classification code:723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 913.1 Production Engineering - 913.4 Manufacturing - 933 Solid State Physics

DOI:10.1117/12.2002127

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 73>

 

Accession number:20131016087929

Title:Study on correlation-tracking method based on edge detection in long-wave infrared image

Authors:Hao, Wei (1); Zhang, Kun (1); Zhan, Zhenhuan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Hao, W.(chinaren009@163.com)

Source title:Chinese Optics Letters

Abbreviated source title:Chin. Opt. Lett.

Volume:10

Issue:SUPPL.2

Issue date:December 2012

Publication year:2012

Article number:S21005

Language:English

ISSN:16717694

Document type:Journal article (JA)

Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China

Abstract:This letter presents a correlation tracking algorithm based on edge detection, in allusion to the phenomenon that the target is susceptible to interference in long-wave infrared image. Firstly, the collected imageis processed by median filtering to remove the defects in the detector. Then thegradient information of the background is filtered out by edge detection method. Secondly, to enhance the edge information, the image is dealt with mathematical morphology (MM). And finally, the correlation matching method is done to acquire the miss-distance information of the target in the image. Through theoretical simulation and practical verification, it is proved that the algorithm has a better effect on inhibiting most of the background information, protecting the target's information effectively, enlarging the weight of the target's information in the correlation operation and improving stability of the detector. &copy; 2012 Chinese Optics Letters.

Number of references:6

Main heading:Edge detection

Controlled terms:Algorithms - Infrared devices - Infrared imaging - Infrared radiation - Mathematical morphology - Median filters

Uncontrolled terms:Background information - Correlation matching - Correlation operation - Correlation tracking - Edge detection methods - Edge information - Longwave infrared - Median filtering - Miss-distance - Theoretical simulation

Classification code:703.2 Electric Filters - 723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics

DOI:10.3788/COL201210.S21005

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 74>

 

Accession number:20120514725858

Title:Characteristics of pulse evolution in mode-locked thulium-doped fiber laser

Authors:An, Ying (1); Shen, Deyuan (1); Zhao, Wei (1); Long, Jingyu (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Shen, D.(shendy@opt.ac.cn)

Source title:Optics Communications

Abbreviated source title:Opt Commun

Volume:285

Issue:7

Issue date:April 1, 2012

Publication year:2012

Pages:1949-1953

Language:English

ISSN:00304018

CODEN:OPCOB8

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands

Abstract:We have numerically investigated the characteristics of the pulse evolution in a passively mode-locked thulium-doped fiber laser with net anomalous cavity dispersion. For the fixed resonator configuration, single-, dual-, triple-, and quadruple-pulses are generated successively by enhancing the pump power or reducing the output ratio. The characteristics of the single or multiple pulses are investigated with various cavity lengths. The separation between the two coexisting pulses changes with the pump power due to the interaction between the soliton and the dispersive waves, and then the two randomly distributed pulses could finally evolve into a soliton pair with fixed separation. According to the results of the numerical simulation, the multiple pulses are found to be generated via pulse splitting and the pulse splitting threshold decreases with the increase of the cavity length. &copy; 2011 Elsevier B.V. All rights reserved.

Number of references:30

Main heading:Mode-locked fiber lasers

Controlled terms:Dispersion (waves) - Fiber lasers - Optical pumping - Separation - Solitons - Thulium - Ultrafast lasers

Uncontrolled terms:Cavity length - Dispersive waves - Mode-locked - Mode-locked laser - Multiple pulse - Passively mode-locked - Pulse evolution - Pulse splitting - Pump power - Randomly distributed  - Resonator configuration - Soliton pairs - Ultra-fast

Classification code:802.3 Chemical Operations - 744.4 Solid State Lasers - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics - 741.1.2 Fiber Optics - 711.1 Electromagnetic Waves in Different Media - 547.2 Rare Earth Metals - 741.1 Light/Optics

DOI:10.1016/j.optcom.2011.12.001

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 75>

 

Accession number:20124115540712

Title:The resolution estimation of wedge and strip anodes

Authors:Yang, Hao (1); Zhao, Baosheng (1); Liu, Yongan (1); Yan, Qiurong (1); Hu, Huijun (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Yang, H.(yxq8519@tom.com)

Source title:Review of Scientific Instruments

Abbreviated source title:Rev. Sci. Instrum.

Volume:83

Issue:9

Issue date:September 2012

Publication year:2012

Article number:093107

Language:English

ISSN:00346748

CODEN:RSINAK

Document type:Journal article (JA)

Publisher:American Institute of Physics, 2 Huntington Quadrangle, Suite N101, Melville, NY 11747-4502, United States

Abstract:A new resolution estimation method for wedge and strip anode based on the single photon imaging configuration is provided. The limiting resolution estimation equation is deduced theoretically according to the threshold principle. The relation between the charge cloud and the covered electrodes is discussed, and the equivalent diameter number is calculated. The resolution equation for the position deviation amplitude or FWHM is provided if noise exists. The relation between the position deviation amplitude and the total charge deviation amplitudes is discussed. The constancy of the position deviation amplitudes versus positions is provided. The results calculated from these equations are discussed. According to the equations, it is indicated that the spatial resolution is affected by the detection system configuration and noise. These conclusions may be useful for the designing and performance improvement of future photon imagers. &copy; 2012 American Institute of Physics.

Number of references:7

Main heading:Estimation

Controlled terms:Electrodes

Uncontrolled terms:Covered electrodes - Detection system - Equivalent diameter - Performance improvements - Resolution estimation - Single-photon imaging - Spatial resolution - Total charge

Classification code:704.1 Electric Components - 921 Mathematics

DOI:10.1063/1.4729117

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 76>

 

Accession number:20123915463679

Title:Slow-light element for tunable time delay based on optical microcoil resonator

Authors:Ma, Chengju (1); Ren, Liyong (1); Xu, Yiping (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Science, Xi'An Shiyou University, Xi'an 710065, China

Corresponding author:Ren, L.(renliy@opt.ac.cn)

Source title:Applied Optics

Abbreviated source title:Appl. Opt.

Volume:51

Issue:26

Issue date:September 10, 2012

Publication year:2012

Pages:6295-6300

Language:English

ISSN:1559128X

E-ISSN:15394522

CODEN:APOPAI

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:We propose a simple and compact slow-light element by use of an optical microcoil resonator (OMR) constituted by two microfiber coils. Based on the matrix exponential method, we solve the coupled-wave equations of the OMR with n turns of microfiber coils and obtain a general solution. Simulations indicate that a tunable slow-light propagation can be obtained by controlling the coupling coefficient between the two adjacent microfiber coils by means of regulating the voltage applied to the ferroelectric crystal. A slow-light time delay up to 62 ps with a bandwidth of 0.4 nm is performed at the wavelength around 1.5 &mu;m. &copy; 2012 Optical Society of America.

Number of references:33

Main heading:Resonators

Controlled terms:Chemical elements - Data communication equipment - Time delay

Uncontrolled terms:Coupling coefficient - Ferroelectric crystal - General solutions - Matrix exponentials - Micro-fiber - Microcoils - Slow-light propagation

Classification code:804 Chemical Products Generally - 731 Automatic Control Principles and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 714 Electronic Components and Tubes - 713 Electronic Circuits

DOI:10.1364/AO.51.006295

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 77>

 

Accession number:20121014830330

Title:High-power semiconductor laser array packaged on microchannel cooler using gold-tin soldering technology

Authors:Wang, Jingwei (1); Kang, Lijun (1); Zhang, Pu (2); Nie, Zhiqiang (2); Li, Xiaoning (2); Xiong, Lingling (2); Liu, Xingsheng (1)

Author affiliation:(1) Xi an Focuslight Technologies Co., Ltd., Xi'an 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17 Xinxi Road, Xi'an, Shaanxi, 710119, China

Corresponding author:Wang, J.(wangjw@focuslight.com.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8241

Monograph title:High-Power Diode Laser Technology and Applications X

Issue date:2012

Publication year:2012

Article number:82410H

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488848

Document type:Conference article (CA)

Conference name:High-Power Diode Laser Technology and Applications X

Conference date:January 22, 2012 - January 24, 2012

Conference location:San Francisco, CA, United states

Conference code:88782

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:High power semiconductor laser arrays have found increased applications in many fields. In this work, a hard soldering microchannel cooler (HSMCC) technology was developed for packaging high power diode laser array. Numerical simulations of the thermal behavior characteristics of hard solder and indium solder MCC-packaged diode lasers were conducted and analyzed. Based on the simulated results, a series of high power HSMCC packaged diode laser arrays were fabricated and characterized. The test and statistical results indicated that under the same output power the HSMCC packaged laser bar has lower smile and high reliability in comparison with the conventional copper MCC packaged laser bar using indium soldering technology. &copy; 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:8

Main heading:Semiconductor lasers

Controlled terms:Cooling systems - Gold alloys - High power lasers - Indium - Microchannels - Power electronics - Reliability - Soldering - Tin

Uncontrolled terms:Diode laser array - Gold-tin - High power semiconductor laser - High reliability - High-power - High-power diode laser arrays - Indium solders - Laser array - Laser bar - lifetime  - microchannel cooler - Microchannel coolers - Output power - Simulated results - Soldering technology - Thermal behaviors

Classification code:744.4.1 Semiconductor Lasers - 744.1 Lasers, General - 715.2 Industrial Electronic Equipment - 641.2 Heat Transfer - 631 Fluid Flow - 604 Metal Cutting and Machining - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 547.1 Precious Metals - 546.2 Tin and Alloys - 538.1.1 Soldering - 421 Strength of Building Materials; Mechanical Properties

DOI:10.1117/12.909655

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 78>

 

Accession number:20121414922952

Title:Manufacture of lasers with multiple operating modes

Authors:Zhu, Changjun (1); Xue, Bing (1); Zhai, Xuejun (1); He, Junfang (2)

Author affiliation:(1) Department of Physics, School of Science, Xi'An Polytechnic University, Xi'an 710048, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an 710119, China

Corresponding author:Zhu, C.(cjzhu@xpu.edu.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:482-484

Monograph title:Advanced Composite Materials

Issue date:2012

Publication year:2012

Pages:1937-1940

Language:English

ISSN:10226680

Document type:Conference article (CA)

Conference name:3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012

Conference date:March 27, 2012 - March 29, 2012

Conference location:Xiamen, China

Conference code:89231

Sponsor:Fujian University of Technology; Xiamen University; Fuzhou University; Huaqiao University; University of Wollongong

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:A two-beam pumped Ti:sapphire laser with femtosecond and picosecond cavities was manufactured. Three operating modes, independent self mode-locking, cross mode-locking and multi-pulse operating, were achieved. In the independent self mode-locking mode, femtosecond and picosecond laser pulses were generated in the two cavities, respectively. In the cross mode-locking mode, synchronized femtosecond and picosecond laser pulses were obtained in the two cavities. In the multi-pulse mode, multi-pulses were produced in the picosecond cavity. The results show that, the independent self mode-locking mode is dominated mainly by group velocity dispersion and self-phase modulation, the cross mode-locking mode is governed primarily by cross-phase modulation and the multi-pulse operating is ruled largely by self-amplitude modulation. &copy; (2012) Trans Tech Publications, Switzerland.

Number of references:6

Main heading:Manufacture

Controlled terms:Laser pulses - Phase modulation - Pumping (laser)

Uncontrolled terms:Cross-phase modulations - Femtoseconds - Modelocking - Multipulses - Operating modes - Picosecond laser pulse - Picoseconds - Self mode locking - Ti: Sapphire laser - Two beams  - Two-cavity

Classification code:537.1 Heat Treatment Processes - 716 Telecommunication; Radar, Radio and Television - 744.1 Lasers, General

DOI:10.4028/www.scientific.net/AMR.482-484.1937

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 79>

 

Accession number:20121915007921

Title:Analyses of mode field propagation properties in fuse-tapered fibers

Authors:Zhou, Liang (1); Duan, Kailiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Zhou, L.(zql_zhouliang@126.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:41

Issue:3

Issue date:March 2012

Publication year:2012

Pages:739-744

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:Applications such as near-field optical-microscope and high power fiber coupler require more precise understanding of light field in fuse-tapered fiber. To study propagation properties of the fuse-tapered fiber, field distributions were simulated by finite-difference time-domain method (FDTD), assuming that the incident beam was fundamental mode. Theoretical model of fuse-tapered fiber used in the simulation was based on a tapering function which was close to the real shape of fuse-tapered fiber. Mode field radius and transverse field distribution of the fuse-tapered fiber in the fundamental mode Gaussian approximation were compared with the simulation results. Finally, the influences of the initial melting length and extension length on the transmission efficiency were analyzed. The results show that field distribution in the fuse-tapered fiber is asymmetric though the shape of fuse-tapered fiber is symmetric. When a fundamental mode field propagates through a fuse-tapered fiber, the light field propagates not only as fundamental mode which is corresponding to the core diameter of the fuse-tapered fiber. The fundamental mode Gaussian approximation may introduce considerable errors to the calculation of field distribution in fuse-tapered fiber. When fuse-tapered fiber is of single cone type or double cone type, the influences of their shapes are different. To get higher transmission efficiency, initial melting length and extension length should be optimized according to the specific applications.

Number of references:17

Main heading:Fibers

Controlled terms:Finite difference time domain method - Melting - Time domain analysis

Uncontrolled terms:Field distribution - Finite-difference-time domain - Propagation properties - Tapered fiber - Transmission efficiency

Classification code:531.1 Metallurgy - 812 Ceramics, Refractories and Glass - 817 Plastics and Other Polymers: Products and Applications - 921 Mathematics

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 80>

 

Accession number:20121714971508

Title:Efficient terahertz-wave generation via fourwave mixing in silicon membrane waveguides

Authors:Wang, Zhaolu (1); Liu, Hongjun (1); Huang, Nan (1); Sun, Qibing (1); Wen, Jin (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, 710119, China

Corresponding author:Wang, Z.

Source title:Optics Express

Abbreviated source title:Opt. Express

Volume:20

Issue:8

Issue date:April 9, 2012

Publication year:2012

Pages:8920-8928

Language:English

E-ISSN:10944087

Document type:Journal article (JA)

Publisher:Optical Society of America, 2010 Massachusetts Ave, NW, Washington, DC, DC 20036-1023, United States

Abstract:Terahertz (THz) wave generation via four-wave mixing (FWM) in silicon membrane waveguides is theoretically investigated with midinfrared laser pulses. Compared with the conventional parametric amplification or wavelength conversion based on FWM in silicon waveguides, which needs a pump wavelength located in the anomalous group-velocity dispersion (GVD) regime to realize broad phase matching, the pump wavelength located in the normal GVD regime is required to realize collinear phase matching for the THz-wave generation via FWM. The pump wavelength and rib height of the silicon membrane waveguide can be tuned to obtain a broadband phase matching. Moreover, the conversion efficiency of the THz-wave generation is studied with different pump wavelengths and rib heights of the silicon membrane waveguides, and broadband THz-wave can be obtained with high efficiency exceeding 1%. &copy; 2012 Optical Society of America.

Number of references:32

Main heading:Waveguides

Controlled terms:Conversion efficiency - Phase matching - Pumps - Wavelength

Uncontrolled terms:Broadband phase-matching - Mid-infrared laser pulse - Parametric amplification - Pump wavelength - Silicon membranes - Silicon waveguide - Terahertz wave generation

Classification code:525.5 Energy Conversion Issues - 618.2 Pumps - 711 Electromagnetic Waves - 713 Electronic Circuits - 714.3 Waveguides

DOI:10.1364/OE.20.008920

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 81>

 

Accession number:20124215579875

Title:Stability in a general coupled laser array

Authors:Zhou, Liang (1); Duan, Kailiang (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China

Corresponding author:Zhou, L.(zql_zhouliang@126.com)

Source title:Optik

Abbreviated source title:Optik

Volume:123

Issue:23

Issue date:December 2012

Publication year:2012

Pages:2187-2190

Language:English

ISSN:00304026

Document type:Journal article (JA)

Publisher:Urban und Fischer Verlag Jena, P.O. Box 100537, Jena, 07705, Germany

Abstract:For the first time we have presented a method to investigate the stability of quiescent state in a coupled laser array. By introducing tiny perturbation, stability of quiescent state can be known by investigating eigenvalues of coefficient matrix of the corresponding linear differential equations. Only when real parts of the eigenvalues were all negative or zero, the corresponding quiescent state is stable. Two tapes of coupled laser array with loop and linear topological structure were studied respectively. It was found that there were innumerable quiescent states and they could be divided into several types based on phase relation. Some types were stable and others were unstable. Topological structure affects the stability of quiescent state in a coupled laser array. &copy; 2011 Elsevier GmbH.

Number of references:10

Main heading:Stability

Controlled terms:Convergence of numerical methods - Differential equations - Eigenvalues and eigenfunctions - Topology

Uncontrolled terms:Coefficient matrix - Coupled lasers - Eigenvalues - Linear differential equation - Perturbation - Phase relation - Quiescent state - Real part - Topological structure

Classification code:801 Chemistry - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity - 951 Materials Science - 961 Systems Science

DOI:10.1016/j.ijleo.2011.10.020

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 82>

 

Accession number:20130716008336

Title:A design of versatile image processing platform based on the dual multi-core DSP and FPGA

Authors:Zhan, Zhen Huan (1); Hao, Wei (2); Tian, Yan (2); Yao, Da Wei (2); Wang, Xian Hong (2)

Author affiliation:(1) University of Chinese Academy of Science, Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China

Corresponding author:Zhan, Z.H.(zhanzhenghuan@163.com)

Source title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Abbreviated source title:Proc. - Int. Symp. Comput. Intell. Des., ISCID

Volume:2

Monograph title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Issue date:2012

Publication year:2012

Pages:236-239

Article number:6405973

Language:English

ISBN-13:9780769548111

Document type:Conference article (CA)

Conference name:2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Conference date:October 28, 2012 - October 29, 2012

Conference location:Hangzhou, China

Conference code:95304

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:As an application of TI's latest multi-core DSP chip TMS320C6678 and Xilinx's FPGA chip XC5VLX110T, This paper designed and implemented a dual-DSP and FPGA real-time image processing system based on the Serial Rapid IO (SRIO), Hyperlink and reconfigurable technology. It used TMS320C6678 on-chip SRIO and Hyperlink interface module, XC5VLX110T on-chip Rocket IO modules, reconfigurable technology to implement a DSP and FPGA loosely coupled parallel interconnection reconfigurable system. On Embedded operating system's DSP / BIOS architecture, this paper implemented the program of hardware driver of bottom layer and the corresponding data transfer procedures, and also completed the transmission of digital images. &copy; 2012 IEEE.

Number of references:10

Main heading:Digital signal processing

Controlled terms:Artificial intelligence - Data transfer - Digital image storage - Field programmable gate arrays (FPGA) - Hypertext systems - Image processing - Multicore programming - Reconfigurable hardware - Structural design

Uncontrolled terms:Bottom layers - Digital image - DSP chip - Embedded operating systems - FPGA chips - Hardware drivers - Hyperlinks - Input-output - Multi core - On chips  - Parallel interconnection - Processing platform - Real-time image processing - Reconfigurable systems - Reconfigurable technologies - Serial Rapid IO

Classification code:408.1 Structural Design, General - 721.3 Computer Circuits - 722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications

DOI:10.1109/ISCID.2012.210

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 83>

 

Accession number:20131416168544

Title:Optical aligning and measuring methods for large aperture optical system

Authors:Zhang, Xue-Min (1); Wei, Ru-Yi (1); Duan, Jia-You (1); Yang, Jian-Feng (1); Li, Hua (1); Hou, Xiaohua (1)

Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Wei, R.-Y.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8416

Monograph title:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

Issue date:2012

Publication year:2012

Article number:84162F

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819490988

Document type:Conference article (CA)

Conference name:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

Conference date:April 26, 2012 - April 29, 2012

Conference location:Xiamen, China

Conference code:96279

Sponsor:The Chinese Optical Society (COS); Inst. Opt. Electron. (IOE), Chinese Acad. Sci. (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:How to implement high accuracy measurement of large-aperture coaxial optical system is crucial to the optical alignment and optical property evaluation. The methods of image quality measurement including interferometer-collimating testing, wave front testing by using Hartmann, image processing and analysis of out-of-focus image were introduced. Both the advantages and disadvantages of the three methods were compared, which showed that the alignment method based on interferometer-collimating testing is the one with the highest accuracy. The method of computer-aided alignment (CAA) based on interferometer-collimating was discussed in detail. By using a ZYGO interferometer, interferograms with different field of views and a series of Zernike coefficients were obtained to express the disalignment of the system, and then these incorrect parameters were calculated by CAA algorithms. An alignment experiment of coaxial three-mirror system with 4m focal length and 500mm aperture was carried out. The RMS value of the system is lower than 0.07&lambda; after iterations, which is close to the optical diffraction limit, proving the effectiveness of CAA method in alignment guidance. &copy; 2012 SPIE.

Number of references:23

Main heading:Optical data processing

Controlled terms:Alignment - Image quality - Interferometers - Manufacture - Measurements - Mirrors - Optical properties - Optical systems - Testing

Uncontrolled terms:Coaxial three-mirror - Computer-aided alignment - Imaging quality - Interferometer-collimating - Large aperture

Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.3 Optical Instruments - 941 Acoustical and Optical Measuring Instruments - 741 Light, Optics and Optical Devices - 601.1 Mechanical Devices - 537.1 Heat Treatment Processes - 423.2 Non Mechanical Properties of Building Materials: Test Methods

DOI:10.1117/12.978167

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 84>

 

Accession number:20131416168617

Title:Multifocus image fusion algorithm based on the contourlet transform

Authors:Yang, Lei (1); Cao, Jianzhong (2); Wang, Hao (2); Tang, Yao (2); Wang, Hua (2)

Author affiliation:(1) Graduate University, Chinese Academy of Sciences, Beijing, 100039, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China

Corresponding author:Yang, L.

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8420

Monograph title:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing

Issue date:2012

Publication year:2012

Article number:84201F

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819491022

Document type:Conference article (CA)

Conference name:6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing

Conference date:April 26, 2012 - April 29, 2012

Conference location:Xiamen, China

Conference code:96280

Sponsor:The Chinese Optical Society (COS); Inst. Opt. Electron. (IOE), Chinese Acad. Sci. (CAS)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Adopting the advantages of contourlet such as multiscale, localization, directionality and anisotropy, a multifocus image fusion algorithm based on contourlet transform is developed [1]. Source images are firstly decomposed to domain of the contourlet transform. The image fusion is then implemented in subbands with different scale and direction combining. The fusion rule with maximum absolute value coefficient is used to fuse the high frequency subbands, while the rule dependent on the image's spatial frequencies and contrast are applied to the low frequency subbands. Finally the fused image is obtained through inverse transform. Experimental results show that the fused image using this algorithm has better subjective visual effect, and is better than the one using traditional Laplacian pyramid algorithm and wavelet based algorithm. &copy; 2012 SPIE.

Number of references:12

Main heading:Image fusion

Controlled terms:Algorithms - Inverse transforms - Manufacture - Optical systems - Testing - Wavelet analysis

Uncontrolled terms:Absolute values - Contourlet transform - Contrast - Laplacian Pyramid - Multi-focus - Multifocus image fusion - Spatial frequency - Wavelet based algorithm

Classification code:921.3 Mathematical Transformations - 921 Mathematics - 741.3 Optical Devices and Systems - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 537.1 Heat Treatment Processes - 423.2 Non Mechanical Properties of Building Materials: Test Methods

DOI:10.1117/12.968604

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 85>

 

Accession number:20123115293167

Title:Optical planar waveguides in Yb<sup>3+</sup>-doped phosphate glasses produced by He<sup>+</sup> ion implantation

Authors:Liu, Chun-Xiao (1); Li, Wei-Nan (1); Wei, Wei (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) School of Electronic and Information Engineering, Hefei Normal University, Hefei 230601, China; (3) Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210046, China

Corresponding author:Wei, W.(weiwei@opt.ac.cn)

Source title:Chinese Physics B

Abbreviated source title:Chin. Phys.

Volume:21

Issue:7

Issue date:July 2012

Publication year:2012

Article number:074211

Language:English

ISSN:16741056

Document type:Journal article (JA)

Publisher:Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United Kingdom

Abstract:Optical planar waveguides in Yb<sup>3+</sup>-doped phosphate glasses are fabricated by implanting triple-energy helium ions. The guiding modes and the near-field intensity distribution are measured by using the prism-coupling method and the end-face coupling setup with a He - Ne laser at 633 nm The intensity calculation method (ICM) is used to reconstruct the refractive index profile of the waveguide. The absorption and the fluorescence investigations reveal that the glass bulk features are well preserved in the active volumes of the waveguides, suggesting the fabricated structures for possible applications as waveguide lasers. &copy; 2012 Chinese Physical Society and IOP Publishing Ltd.

Number of references:25

Main heading:Ion implantation

Controlled terms:Photoluminescence - Planar waveguides - Waveguides - Ytterbium

Uncontrolled terms:Active volumes - Coupling set-up - Fabricated structures - Guiding mode - Helium ion - Laser materials - Near-field intensity - Optical planar waveguides - Phosphate glass - Prism coupling method  - Refractive index profiles - Waveguide lasers

Classification code:547.2 Rare Earth Metals - 714.3 Waveguides - 741.1 Light/Optics - 932.1 High Energy Physics

DOI:10.1088/1674-1056/21/7/074211

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 86>

 

Accession number:20124315589204

Title:All optical nanostructed sensor based on metal-dielectric-metal plasmonic waveguide

Authors:Gong, Yongkang (1); Copner, N.J. (1); Davies, Antony (3); Li, Kang (1); Huang, Jungang (1)

Author affiliation:(1) Faculty of Advanced Technology, University of Glamorgan, CF37 1DL, United Kingdom; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (3) Faculty of Health, Sport and Science, University of Glamorgan, CF37 1DL, United Kingdom

Corresponding author:Gong, Y.(gyk@opt.ac.cn)

Source title:2012 Symposium on Photonics and Optoelectronics, SOPO 2012

Abbreviated source title:Symp. Photonics Optoelectron., SOPO

Monograph title:2012 Symposium on Photonics and Optoelectronics, SOPO 2012

Issue date:2012

Publication year:2012

Article number:6270564

Language:English

ISBN-13:9781457709111

Document type:Conference article (CA)

Conference name:2012 International Symposium on Photonics and Optoelectronics, SOPO 2012

Conference date:May 21, 2012 - May 23, 2012

Conference location:Shanghai, China

Conference code:93170

Sponsor:IEEE Photonics Society; IEEE Wuhan Section; Optics and Photonics Society of Singapore; Wuhan University; Beijing Jiaotong University

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:Based on a two-dimensional plasmonic metal-dielectric-metal waveguide with a thin metallic layer and dual nanocavites inserted in the core, a novel nanostructured absorber is presented. A transfer matrix model for the proposed structure is established, and the optical spectra are investigated. Design results show that a narrow reflection spectrum occurs at position of the near-unity absorption, and is significantly influenced by the environment. It is able to generate a sensitivity as high as 1000 nm/RIU, which be used as an excellent sensing platform for chemical and biochemically relevant molecules. &copy; 2012 IEEE.

Number of references:23

Main heading:Metals

Controlled terms:Absorption spectroscopy - Nanostructures - Optical waveguides - Optoelectronic devices - Photonics - Plasmons - Sensors - Transfer matrix method - Two dimensional

Uncontrolled terms:all optical - Nano-structured - Optical spectra - Plasmonic - Plasmonic waveguides - Plasmonics - Reflection spectra - Sensing platforms - Thin metallic layer - Transfer matrix model

Classification code:933 Solid State Physics - 921 Mathematics - 902.1 Engineering Graphics - 801 Chemistry - 761 Nanotechnology - 744 Lasers - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 717.2 Optical Communication Equipment - 717 Optical Communication - 712.1 Semiconducting Materials - 712 Electronic and Thermionic Materials - 531 Metallurgy and Metallography

DOI:10.1109/SOPO.2012.6270564

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 87>

 

Accession number:20130415940872

Title:Design of fore objective for wide spectrum imaging spectrometer

Authors:Lu, Xuefeng (1); Bai, Qinglan (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (2) University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author:Lu, X.(luxf789@163.com)

Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering

Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.

Volume:41

Issue:11

Issue date:November 2012

Publication year:2012

Pages:2993-2996

Language:Chinese

ISSN:10072276

Document type:Journal article (JA)

Publisher:Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China

Abstract:An achromatic and telecentric fore objective design for a hyperspectral imaging spectrometer in the VIS-SWIR spectral range was presented in this paper. The design scheme was discussed based on the system specifications of 0.5-2.5 &mu;m wavelength range, 750 mm focal length, F/number of 5 and &plusmn;0.8&deg; field of view. A Ritchey-Chre&acute;tien system with a refractive corrector was designed to meet the design requirements. The properties of materials used in the visible and shortwave infrared bands were analyzed in the design of the refractive corrector. Then the F_Silica was chosen as the refractive corrector's material. The final design system has a simple structure. Chromatic aberration is well corrected as well as other aberrations. At the same time, the system is also a telecentric one. The design result meets the imaging spectrometer system requirements and the imaging quality approaches the diffraction limit within the full field of view in the specific wavebands.

Number of references:7

Main heading:Spectrometers

Controlled terms:Aberrations - Diffraction - Optical design - Silica - Specifications - Spectrometry - Spectroscopy

Uncontrolled terms:Achromatism - Catadioptric system - Chromatic aberration - Design requirements - Design scheme - Design systems - Diffraction limits - F/number - Field of views - Focal lengths  - Full-field - Hyperspectral Imaging - Imaging quality - Imaging spectrometers - Short wave infrared - Simple structures - Spectral range - System requirements - System specification - Telecentric  - Wavebands - Wavelength ranges - Wide spectrum

Classification code:741 Light, Optics and Optical Devices - 741.1 Light/Optics - 801 Chemistry - 812 Ceramics, Refractories and Glass - 902.2 Codes and Standards

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 88>

 

Accession number:20130716008357

Title:Research on image registration and mosaic based on vector similarity matching principle

Authors:Qin, Jia (1); Yang, Jianfeng (1); Xue, Bin (1); Bu, Fan (1)

Author affiliation:(1) Key Laboratory of Spectrum Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (2) Chinese Academy of Science, Xi'an Institute of Optics and Precision Mechanics, Graduate University, Beijing, China

Corresponding author:Qin, J.

Source title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Abbreviated source title:Proc. - Int. Symp. Comput. Intell. Des., ISCID

Volume:2

Monograph title:Proceedings - 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Issue date:2012

Publication year:2012

Pages:323-326

Article number:6406005

Language:English

ISBN-13:9780769548111

Document type:Conference article (CA)

Conference name:2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012

Conference date:October 28, 2012 - October 29, 2012

Conference location:Hangzhou, China

Conference code:95304

Publisher:IEEE Computer Society, 2001 L Street N.W., Suite 700, Washington, DC 20036-4928, United States

Abstract:Scale invariant feature transform (SIFT) is a better corner extraction algorithm, but there are still mismatching problems in the feature matching step. A new matching principle based on vector similarity is proposed and then it is compared with traditional matching principle. Firstly, the matching feature points are detected by the new principle. Mismatching points are further removed by using the mutual mapping theory. Secondly, transformation matrix is calculated by random sample consensus (RANSAC). Furthermore, the matrix is optimized by Levenberg-Marquardt algorithm (L-M). Lastly, image mosaic is realized by image fusion. Experimental results indicate that compared with traditional matching principle, new matching principle has improved matching accuracy. It is able to apply new principle to image registration and image mosaic. &copy; 2012 IEEE.

Number of references:12

Main heading:Image matching

Controlled terms:Algorithms - Artificial intelligence - Image fusion - Image registration - Linear transformations

Uncontrolled terms:Extraction algorithms - Feature matching - Image mosaic - Levenberg-Marquardt algorithm - Matching principle - Random sample consensus - Scale invariant feature transforms - Transformation matrices - Vector similarity

Classification code:723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.3 Mathematical Transformations

DOI:10.1109/ISCID.2012.232

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 89>

 

Accession number:20130415935026

Title:Hollow-core photonic bandgap fiber with microfluid-infiltrated air holes for slow-light propagation

Authors:Ren, Liyong (1); Liang, Jian (1); Yun, Maojin (2)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an 710119, China; (2) College of Physics Science, Qingdao University, Qingdao 266071, China

Corresponding author:Ren, L.(renliy@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8497

Monograph title:Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI

Issue date:2012

Publication year:2012

Article number:849710

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819492142

Document type:Conference article (CA)

Conference name:Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI

Conference date:August 12, 2012 - August 13, 2012

Conference location:San Diego, CA, United states

Conference code:94987

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:Slow light plays an important role in the fields of all-optical signal processing and integration photonics. It has shown many potential applications, such as realizing optical delay lines or buffers, enhancing linear and nonlinear light-matter interactions, as well as increasing the sensitivity of the interferometers and transducers. In this paper, hollow-core photonic bandgap fibers made from high index glasses are designed by infiltrating microfluid into the air-holes to tailor the fiber dispersion for slow-light propagation under low pulse distortion. In such a fiber made from Si material, group index ng~8 is obtained with a bandwidth up to 30 nm, where the group index fluctuation is restricted in &plusmn;10 % of the ng, while ng~6 is obtained with a bandwidth over 100 nm when the chalcogenide material is selected instead. Such a &plusmn;10 % criterion determines a regarded flatland region accordingly, and in this region the group velocity dispersion can be negligible. It is found that for the same fiber length the slow-light time delay in the photonic bandgap fiber is much larger as compared with that in the single mode fiber. This kind of photonic bandgap fiber may have many potential applications in short-distance fiber communications and delay lines. &copy; 2012 SPIE.

Number of references:25

Main heading:Fibers

Controlled terms:Bandwidth - Dispersions - Group velocity dispersion - Light propagation - Nonlinear optics - Photonic bandgap fibers - Photonic devices - Signal distortion - Signal processing - Single mode fibers  - Waves

Uncontrolled terms:Air holes - All-optical signal processing - Chalcogenide materials - Fiber communications - Fiber dispersion - Fiber length - Group index - High index - Hollow-core - Light-matter interactions  - Micro-fluid - Optical delay lines - Potential applications - Pulse distortion - Slow-light propagation

Classification code:951 Materials Science - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 751 Acoustics, Noise. Sound - 741 Light, Optics and Optical Devices - 716.1 Information Theory and Signal Processing - 711 Electromagnetic Waves

DOI:10.1117/12.929124

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 90>

 

Accession number:20121014830325

Title:Hard solder 20-kW QCW stack array diode laser

Authors:Li, Xiaoning (1); Kang, Lijun (3); Wang, Jingwei (3); Zhang, Pu (1); Xiong, Lingling (1); Liu, Xingsheng (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17 Xinxi Road, Xi'an, Shaanxi, 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab. of Information Photonic Technique, Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an, Shaanxi, 710049, China; (3) Xi an Focuslight Technologies Co., Ltd., Xi'an 710119, China

Corresponding author:Li, X.(smto@opt.ac.cn)

Source title:Proceedings of SPIE - The International Society for Optical Engineering

Abbreviated source title:Proc SPIE Int Soc Opt Eng

Volume:8241

Monograph title:High-Power Diode Laser Technology and Applications X

Issue date:2012

Publication year:2012

Article number:82410C

Language:English

ISSN:0277786X

CODEN:PSISDG

ISBN-13:9780819488848

Document type:Conference article (CA)

Conference name:High-Power Diode Laser Technology and Applications X

Conference date:January 22, 2012 - January 24, 2012

Conference location:San Francisco, CA, United states

Conference code:88782

Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)

Publisher:SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States

Abstract:With the increasing applications of high power semiconductor lasers in industry, advanced manufacturing, aerospace, medical systems, display, entertainment, etc., semiconductor lasers with high power and high performances are required. The performance of semiconductor lasers is greatly affected by packaging structure, packaging process and beam shaping. A novel macro channel cooler (MaCC) for stack array laser with good heat dissipation capacity and high reliability is presented in this work. Based on the MaCC package, a high power stack array diode laser is successfully fabricated. A series of techniques such as spectrum control and beam control are used to achieve narrow spectrum and high beam quality. The performances of the semiconductor laser stack array are characterized. A high power 20kW QCW hard solder packaged stack array laser is fabricated; a narrow spectrum of 3.94 nm and an excellent rectangular beam shape are obtained. The lifetime of the stack array laser is tested as well. &copy; 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Number of references:6

Main heading:Semiconductor lasers

Controlled terms:Cooling systems - High power lasers - Packaging - Reliability

Uncontrolled terms:Advanced manufacturing - Beam control - Beam-shaping - High beam quality - High power semiconductor laser - High reliability - High-power - Medical systems - Packaging process - Packaging structure  - Rectangular beams - Spectrum control - stack array diode laser

Classification code:421 Strength of Building Materials; Mechanical Properties - 641.2 Heat Transfer - 694.1 Packaging, General - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers

DOI:10.1117/12.909772

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 91>

 

Accession number:20125015787465

Title:Fabrication and applications of GRIN materials

Authors:Li, Yulin (1); Hu, Baowen (1); He, Zhengquan (1); Zhang, Minrui (1); Huo, Junmin (1); Yao, Shengli (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, 17 Xinxi RD. Xi'an High-Tech Dev. Zone, 710119 Xi'an, China

Corresponding author:Li, Y.(liyu@opt.ac.cn)

Source title:Advanced Materials Research

Abbreviated source title:Adv. Mater. Res.

Volume:586

Monograph title:Advanced Materials and Information Technology Processing II

Issue date:2012

Publication year:2012

Pages:215-220

Language:English

ISSN:10226680

ISBN-13:9783037855232

Document type:Conference article (CA)

Conference name:2012 2nd International Conference on Advanced Materials and Information Technology Processing, AMITP 2012

Conference date:October 17, 2012 - October 18, 2012

Conference location:Taipei, Taiwan

Conference code:94267

Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:In recent years, a series of gradient index (GRIN) materials including Optical glass and polymer have been Research and developed in our laboratory. The Micro-lenses and arrays with the special optical materials also have been fabricated mainly by using Ion-exchange method through refractive index profile, which are applied to micro-optic devices and other applications-- especially in the coupled and connected devices for fiber communications and medical endoscope or they are used primarily for document scanning equipments. &copy; (2012) Trans Tech Publications, Switzerland.

Number of references:10

Main heading:Materials

Controlled terms:Gradient index optics - Information technology - Ion exchange - Optical devices - Optical glass

Uncontrolled terms:Document scanning - Fiber communications - Gradient indexes - Gradient-index - GRIN lens - Ion-exchange methods - Medical endoscopes - Micro lens - Microoptical devices - Refractive index profiles

Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2 Chemical Reactions - 903 Information Science - 951 Materials Science

DOI:10.4028/www.scientific.net/AMR.586.215

Database:Compendex

Compilation and indexing terms, Copyright 2014 Elsevier Inc.

 

<RECORD 92>

 

Accession number:20124515645165

Title:Influence of aperture averaging on bit-error rate of spatial coherent optical communication systems using phase compensation technique

Authors:Yu, Gang (1); Xie, Xiaoping (1); Zhao, Wei (1); Wang, Wei (1); Duan, Tao (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi 710119, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) Xi'an Communication College, Xi'an, Shaanxi 710106, China

Corresponding author:Yu, G.(yugang@opt.cn)

Source title:Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:Guangxue Xuebao

Volume:32

Issue:9

Issue date:September 2012

Publication year:2012

Article number:0906006

Language:Chinese

ISSN:02532239

CODEN:GUXUDC

Document type:Journal article (JA)

Publisher:Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:Based on the model of the spatial coherent optical communication system under the influence of the atmospheric turbulence and the plane-wave propagation model of aperture averaging, by using of numerical simulation, under the weak irradiance fluctuation condition the influence of aperture averaging including the atmospheric turbulence inner scale and outer scale is investigated on the bit-error rate and the optimum receiver aperture diameter of the coherent optical communication system. The results show that aperture averaging can decrease the bit-error rate effectively; the improved effect of aperture averaging on the bit-error rate is more obvious for the higher original SNR, the shorter transmission distance, the longer wavelength, the larger value of the phase compensation mode J and the receiver aperture diameter which is closer to the optimum value; aperture averaging affects the optimum value of the receiver aperture diameter, and if the value of the phase compensation mode J is larger, the influence is more obvious; the bit-error rate and the optimum receiver aperture diameter will increase with the increase of atmospheric turbulence inner scale and decrease with the decrease of atmospheric turbulence outer scale. This will provide the necessary theoretical basis for the design of a coherent optical communication system.

Number of references:29

Main heading:Atmospheric turbulence

Controlled terms:Optical communication