2019

• Record 529 of
  
  Title:Broadband local oscillator free photonic microwave mixer based on a coherent kerr micro-comb source
  
  Author(s):Wu, Jiayang(1); Xu, Xingyuan(1); Tan, Mengxi(1); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: Optics InfoBase Conference Papers  Volume: Part F129-CLEO_SI 2019  Issue:   DOI: 10.1364/CLEO_SI.2019.SF2N.2  Published: 2019  
  Abstract:We demonstrate a photonic microwave mixer based on an integrated micro-comb source. We achieve an operation bandwidth of over 40 GHz with a conversion efficiency of −6.8 dB and a spurious suppression ratio of 43.5 dB. © 2019 The Author(s)
  Accession Number: 20192707136997
• Record 530 of
  
  Title:Tunable Photonic RF Bandpass Filters Based on an 80 Channel Kerr Micro-Comb Source
  
  Author(s):Tan, Mengxi(1); Xu, Xingyuan(1); Wu, Jiayang(1); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings  Volume:   Issue:   DOI: 10.23919/CLEO.2019.8749922  Published: May 2019  
  Abstract:We demonstrate a tunable photonic RF bandpass filter based on a Kerr micro-comb source providing 80 taps in the C-band. We achieve a widely tunable centre frequency (0.05FSRRF∼0.40FSRRF) and 3-dB bandwidth (0.5 ∼ 4.6 GHz). © 2019 The Author(s) 2019 OSA.
  Accession Number: 20192907216588
• Record 531 of
  
  Title:Polarization-based plug-and-play measurement-device-independent quantum key distribution
  
  Author(s):Hu, Min(1); Zhang, Litao(1); Guo, Banghong(1,2,3,4); Li, Jun(5)
  Source: Optical and Quantum Electronics  Volume: 51  Issue: 1  DOI: 10.1007/s11082-018-1736-1  Published: January 1, 2019  
  Abstract:Measurement-device-independent quantum key distribution (MDI-QKD) has received much attention, with the goal of overcoming all of the security loopholes caused by an imperfect detection system. We here propose a plug-and-play MDI-QKD (P&P MDI-QKD) scheme whereby an untrusted relay node, Charlie, owns a laser and sends photons to Alice and Bob. Alice (Bob) modulates the polarization of the incident photons and returns them to Charlie. Charlie uses a modified Bell state analyzer (BSA) to perform Bell state measurements (BSM). In comparison with the original version of MDI-QKD, our scheme exploits a single untrusted laser as the photon source. This makes the signal photons identical and enhances the Hong-Ou-Mandel effect. Second, because of the P&P structure, the setup can automatically eliminate the birefringence influence of the fibers, which makes the setup highly stable. Finally, our modified BSA can identify | Φ〉 + and | Φ〉 - of four Bell states with polarization encoding but not | Ψ〉 + and | Ψ〉 -. Based on practical experimental parameters, a simulation showed that the maximum theoretical secure transmission distance could reach more 280 km. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
  Accession Number: 20190206352847
• Record 532 of
  
  Title:Orthogonally Polarized Optical Single Sideband Generation Based on Integrated Microring Resonators
  
  Author(s):Wu, Jiayang(1); Xu, Xingyuan(1); Nguyen, Thach G.(1); Chu, Sai T.(1); Little, Brent E.(3); Morandotti, Roberto(4); Mitchell, Arnan(5,6,7); Moss, David J.(1,2)
  Source: 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings  Volume:   Issue:   DOI: 10.1364/ofc.2019.m1b.5  Published: April 22, 2019  
  Abstract:We demonstrate orthogonally polarized RF optical single sideband generation based on integrated dual-polarization-mode microring resonators. A high optical carrier-to-sideband ratio of 59.3 dB and a large RF tuning range of over 20 GHz are achieved. © 2019 OSA.
  Accession Number: 20192006917060
• Record 533 of
  
  Title:True time delays for phased array antennas based on a microcomb
  
  Author(s):Tan, Mengxi(1); Xu, Xingyuan(1); Wu, Jiayang(1); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 11200  Issue:   DOI: 10.1117/12.2540414  Published: 2019  
  Abstract:A microwave photonic true time delay line based on an integrated Kerr comb source with 49 GHz free spectral range was proposed and demonstrated. We theoretically analyze the performance of a phased array antenna and show that this large channel count results in a high angular resolution and wide beam-steering tunable range. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
  Accession Number: 20200808205127
• Record 534 of
  
  Title:Orthogonally polarized optical single sideband generation based on integrated microring resonators
  
  Author(s):Wu, Jiayang(1); Xu, Xingyuan(1); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: Optics InfoBase Conference Papers  Volume: Part F160-OFC 2019  Issue:   DOI: null  Published: 2019  
  Abstract:We demonstrate orthogonally polarized RF optical single sideband generation based on integrated dual-polarization-mode microring resonators. A high optical carrier-to-sideband ratio of 59.3 dB and a large RF tuning range of over 20 GHz are achieved. © OSA 2019 © 2019 The Author(s)
  Accession Number: 20202208771702
• Record 535 of
  
  Title:Broadband Local Oscillator Free Photonic Microwave Mixer Based on a Coherent Kerr Micro-Comb Source
  
  Author(s):Wu, Jiayang(1); Xu, Xingyuan(1); Tan, Mengxi(1); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings  Volume:   Issue:   DOI: 10.23919/CLEO.2019.8749146  Published: May 2019  
  Abstract:We demonstrate a photonic microwave mixer based on an integrated micro-comb source. We achieve an operation bandwidth of over 40 GHz with a conversion efficiency of -6.8 dB and a spurious suppression ratio of 43.5 dB. © 2019 The Author(s) 2019 OSA.
  Accession Number: 20192907216446
• Record 536 of
  
  Title:Reconfigurable microwave signal processor for fractional and regular Hilbert transform based on a microcomb
  
  Author(s):Tan, Mengxi(1); Xu, Xingyuan(1); Wu, Jiayang(1); Boes, Andy(2); Corcoran, Bill(8); Nguyen, Thach G.(2); Chu, Sai T.(3); Little, Brent E.(4); Morandotti, Roberto(5,6,7); Mitchell, Arnan(2); Moss, David J.(1)
  Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 11200  Issue:   DOI: 10.1117/12.2540404  Published: 2019  
  Abstract:We propose and demonstrate a reconfigurable microwave signal processor for fractional and regular Hilbert transform with 17 GHz bandwidth based on an integrated Kerr optical frequency comb source. Transmission responses and temporal characterization are experimentally demonstrated. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
  Accession Number: 20200808205243
• Record 537 of
  
  Title:Grafted optical vortex with controllable orbital angular momentum distribution
  
  Author(s):Zhang, Hao(1); Li, Xinzhong(1,2,3); Ma, Haixiang(1); Tang, Miaomiao(1); Li, Hehe(1); Tang, Jie(2); Cai, Yangjian(4,5)
  Source: Optics Express  Volume: 27  Issue: 16  DOI: 10.1364/OE.27.022930  Published: 2019  
  Abstract:In an optical vortex (OV) field, the orbital angular momentum (OAM) distribution strongly depends on the intensity, which results in difficulty in OAM independent modulation. To overcome this limitation, we propose a grafted optical vortex (GOV) via spiral phase reconstruction of two or more OVs with different topological charges (TCs). To remain the annular shape of the GOV’s intensity, the Dirac δ-function is employed to restrict the energy in a ring. Theoretical analysis and manipulation experiments of polystyrene microspheres show that the magnitude and direction of the GOV’s local OAM are controllable by modulating the grafted TCs while the intensity remains constant. The results of this work provide an ingenious method to control the local tangential force on the light ring, which will promote potential applications in optical trapping and rotating micro-particles. © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
  Accession Number: 20193207292509
• Record 538 of
  
  Title:Fuzzy Greenberger-Horne-Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network
  
  Author(s):Zhang, Litao(1); Hu, Min(1); Ran, Pan(1); Zeng, Hanyu(1); Li, Jun(2); Guo, Banghong(1,2,3,4,5)
  Source: Optical Engineering  Volume: 58  Issue: 1  DOI: 10.1117/1.OE.58.1.016113  Published: January 1, 2019  
  Abstract:Greenberger-Horne-Zeilinger (GHZ) state is an essential resource in quantum processing. We propose multiparty measurement-device-independent quantum key distribution (MDI-QKD) protocol based on a fuzzy GHZ state analyzer, which is composed of linear optical components. Our scheme requires only N detectors and N-1 polarizing beam splitters to realize an N-party MDI-QKD network. From numerical simulations, the security communication distance is improved to 300 km, and key rate is determined to be higher than 10-14. Compared with the previous work, our scheme needs less optical components and detectors, is easier to extend more users, and narrows the gap between theory and practice in multiparty MDI-QKD network. © 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
  Accession Number: 20191106614857
• Record 539 of
  
  Title:Sulfide treatment passivation of mid-/long-wave dual-color infrared detectors based on type-II InAs/GaSb superlattices
  
  Author(s):Guo, Chunyan(1,2,3); Jiang, Zhi(3,4); Jiang, Dongwei(3,4); Wang, Guowei(3,4); Xu, Yingqiang(3,4); Wang, Tao(1); Tian, Jinshou(1,5); Wu, Zhaoxin(2,5); Niu, Zhichuan(3,4)
  Source: Optical and Quantum Electronics  Volume: 51  Issue: 3  DOI: 10.1007/s11082-019-1779-y  Published: March 1, 2019  
  Abstract:The surface passivation of mid-/long-wave dual-color infrared detectors based on type-II InAs/GaSb superlattices(T2SLs) photodetectors employing diverse voltage and current conditions of sulfide treatment passivation was presented. The superlattices were grown on GaSb substrate by molecular beam epitaxy technology. The circle pixel devices in the diameter of 200 μm with 5 μm at mid-infrared and 14 μm at long-infrared 100% cutoff wavelength were fabricated. Compared to only SiO2 encapsulation passivation and unpassivated detectors, the dark current density, which takes into account surface leakage current, was reduced by approximately three orders of magnitude and the R0A-product was six times higher by sulfide treatment. Besides, detectors passivated through 22 V 15 mA sulfur treated, the responsivity of was 0.95A/W and QE was 0.44 at 2.6 μm. As for the wavelength of 5.3 μm, the responsivity and QE were 1.95 A/W and 0.45 severally. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
  Accession Number: 20191006587553
• Record 540 of
  
  Title:Hermiticity-tunable beam reshaping: Localization, recurrence and group velocity oscillation
  
  Author(s):Ji, Kaiwen(1); Liu, Zhenjuan(1); Dai, Yanan(1); Gao, Yuanmei(5); Wang, Yishan(2); Bai, Jintao(1,3); Zhang, Guoquan(4); Qi, Xinyuan(1,2,3)
  Source: New Journal of Physics  Volume: 21  Issue: 10  DOI: 10.1088/1367-2630/ab4d09  Published: October 29, 2019  
  Abstract:We propose a novel method to reshape the light beam in a Hermiticity-tunable photonic lattice with PT symmetric perturbations. By adjusting the PT perturbations, the Hermiticity of the system varies alternatively, further resulting in the periodic oscillations of the group velocity (v g) as well as the group velocity dispersion (GVD). Once the values of v g and its corresponding GVD recover and the averaged group velocity (v g) is zero, the light beam will be localized and recur at these Hermitian points. Further study indicates that GVD plays a key role in the evolution of the light beam, larger positive dispersion [Re(GVD)] and lower magnitude of Im(GVD) lead to higher peak energy of the light field. Our work provides a non-resonant way to control the light propagation and to reshape the group velocity distribution, which may have promising applications in all-optical circuit, optical sensor and optical communications. © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.
  Accession Number: 20194907778187