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arXiv 2020年

作者： Yang, Tian Yi, Hui Wang, Xiaodan Miao, Yichen Chen, Cheng Long, Jing Kong, Xiangyang Wu, Lin State Key Laboratory of Advanced Optical Communication Systems and Networks Key Laboratory for Thin Film and Microfabrication of the Ministry of Education Department of Instrument Science & Engineering School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China School of Material Science and Engineering Shanghai Jiao Tong University Shanghai200240 China 1 Fusionopolis Way #16-16 Connexis 138632 Singapore

Nanosphere-on-mirror plasmonic antennas, each having a monolayer graphene or MoS2 sheet in the gap, were pumped with a femtosecond laser. Abrupt turnings in the scattering linewidth and peak intensity trends as the laser power changed were experimentally observed. Theoretical modelling of dynamic plasmon evolvement attributes the turning to transitioning between two plasmon states, with a universal switching threshold of four-wave mixing efficiency ≈ 0.1.%. This bistability is rendered by a strong feedback from the nonlinear gap current to the gap plasmons, and involvement of both four and high-order wave mixing. This work reveals a pathway to making energy efficient nonlinear plasmonic elements. Copyright © 2020, The Authors. All rights reserved.

关键词： Layered semiconductors

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Non-volatile optical switch based on a GST-loaded directional coupler 3

Non-volatile optical switch based on a GST-loaded directiona...

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3rd Optoelectronics Global Conference, OGC 201.

作者： Zhang, Hanyu Zhou, Linjie Lu, Liangjun Chen, Jianping Rahman, B.M.A. Shanghai Institute for Advanced Communication and Data Science Shanghai Key Lab of Navigation and Location Services State Key Laboratory of Advanced Optical Communication Systems and Networks SJTU Shanghai China Department of Electrical and Electronic Engineering University of London London United Kingdom

ISBN: (纸本)9781538673973

We present a non-volatile optical switch based on a directional coupler comprising a silicon-Ge2Sb2Te5 (GST) hybrid waveguide. The non-volatility of GST makes it attractive for reducing static power consumption in optical switching. Experimental results show that the optical switch has an extinction ratio of >20 dB in the bar state and >25 dB in the cross state around 1.78 nm wavelength. The insertion loss is 2 dB and 7 dB for the bar and cross states, respectively. © 201. IEEE.

关键词： Phase change materials

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On-chip silicon polarization and mode handling devices

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Frontiers of Optoelectronics 2018年第1期11卷 77-91页

作者： Yong ZHANG Yu HE Qingming ZHU Xinhong JIANG Xuhan Guo Ciyuan QIU Yikai SU State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240. China

Mode-and polarization-division multiplexing are new promising options to increase the transmission capacity of optical ***-chip silicon polarization and mode handling devices are {1. components in integrated mode-and polarization-division multi-plexed photonic *** this paper,we review our recent progresses on silicon-based polarization beam splitters,polarization splitters and rotators,mode（de）multiplexers,and mode and polarization selective *** polarization beam splitters and rotators are demonstrated with high extinction ratio,compact footprint and high fabrication *** on-chip mode multiplexing,we introduce a low loss and fabrication tolerant three-mode（de）multiplexer employing sub-wavelength grating *** analogy to a conventional wavelength selective switch in wavelength-division multi-plexing,we demonstrate a selective switch that can route mode-and polarization-multiplexed signals.

关键词： silicon photonics polarization beam splitter,polarization splitter and rotator mode （de）multiplexer,selective switch

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Demonstration of 1.-Gb/s, 5-GHz spaced coherent UDWDM-PON with Digital signal processing in real-time

Demonstration of 10-Gb/s, 5-GHz spaced coherent UDWDM-PON wi...

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optical Fiber {1. Conference, OFC 201.

作者： Luo, Ming Zeng, Tao Yi, Lilin Li, Jie Li, Xiang Yang, Qi Xue, Lei State Key Laboratory of Optical Comm. Technologies and Networks Wuhan430074 China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan430074 China

This paper experimentally demonstrate the real-time field trial of 401.;1.-Gb/s coherent UDWDM-PON at 5-GHz spacing over 40-km field-installed fiber. The system stability is demonstrated by 8-hour real-time BER mea... 详细信息

ISBN: (纸本)9781943580385

This paper experimentally demonstrate the real-time field trial of 40×1.-Gb/s coherent UDWDM-PON at 5-GHz spacing over 40-km field-installed fiber. The system stability is demonstrated by 8-hour real-time BER measurement with power budget of 29 dB. © OSA 201..

关键词： System stability

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Non-volatile silicon photonic devices enabled by phase change material

Non-volatile silicon photonic devices enabled by phase chang...

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International Conference on optical {1.s and networks (ICOCN)

作者： Linjie Zhou Hanyu Zhang Hao Hu Ningning Wang Liangjun Lu B. M. A. Rahman Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Jiao Tong University Shanghai China Department of Electrical and Electronic Engineering University of London London U.K.

We review our recent research progress on silicon-Ge 2 Sb 2 Te 5 hybrid photonic devices. The optical transmission can be varied by 20 dB using micron-length GST. The inherent "self-holding" feature of GST ... 详细信息

关键词： optical ring resonators optical pulses optical waveguides Silicon optical switches Photonics

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32-Gbps DAC-Free Block-Wise QPSK 1.00-km SSMF Single-PD Direct Detection Transmission Based on Delta-Sigma Modulation for Virtual Carrier Generation

32-Gbps DAC-Free Block-Wise QPSK 1200-km SSMF Single-PD Dire...

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Asia communications and Photonics Conference

作者： Zhuo Chen Ziqiang Wu Jiaqi Huang Shenmao Zhang Xueyuan Ao Zhongzhong Wang Junxiang Ke Lilin Yi Qi Yang School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China State Key Lab of Advanced Communication Systems and Networks Department of Electronics Engineering Shanghai Jiao Tong University Shanghai 200240 China

We experimentally demonstrated a 32Gb/s block-wise QPSK signal transmission over 1.00-km SSMF using a single PD. Both QPSK and carrier are generated using high speed digital IO ports based on delta-sigma modulation wi... 详细信息

ISBN: (纸本)9781943580705

关键词： Analog to digital converters Modulation optical amplifiers Quadrature phase shift keying Signal processing Signal transmission

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On-chip silicon photonic 2 × 2 mode-and polarization-selective switch with low inter-modal crosstalk

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Photonics Research 2017年第5期5卷 512-517页

作者： YONG ZHANG YU HE QINGMING ZHU CIYUAN QIU YIKAI SU State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong University

Mode-and polarization-division multiplexing offer new dimensions to increase the transmission capacity of optical {1.s. Selective switches are key components in reconfigurable optical network nodes. An on-chip silicon 2 × 2 mode-and polarization-selective switch that can route four data channels on two modes and two polarizations simultaneously is proposed and experimentally demonstrated for the first time, to the best of our knowledge. The overall insertion losses are lower than 8.6 d B. To reduce the inter-modal crosstalk, polarization beam splitters are added to filter the undesired polarizations or modes. The measured inter-modal andintra-modal crosstalk values are below-23.2 and-22.8 d B for all the channels, respectively.

关键词： mode-and polarization-selective switch with low inter-modal crosstalk On-chip silicon photonic 2 MZI

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Ultra-compact silicon polarization beam splitter with a short coupling length of 0.768 μm

Ultra-compact silicon polarization beam splitter with a shor...

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optical Fiber {1. Conference, OFC 201.

作者： Zhang, Yong Wang, Xiaodong Guo, Xuhan Qiu, Ciyuan Cheng, Xiulan Su, Yikai Soref, Richard State Key Lab of Advanced Optical Communication Systems and Networks Center for Advanced Electronic Materials and Devices Shanghai Jiao Tong University Shanghai200240 China Engineering Department University of Massachusetts BostonMA02125 United States

We demonstrate an ultra-compact silicon polarization beam splitter with a coupling length of 0.768 μm. Lower than 2-dB insertion losses and over 1.-dB extinction ratios are achieved over a wavelength range of 60 nm. ... 详细信息

ISBN: (纸本)9781943580385

关键词： Silicon

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A Mixed-Signal Framework for Modelling Fourier-Domain optical Coherence Tomography

A Mixed-Signal Framework for Modelling Fourier-Domain Optica...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yuye Ling Mengyuan Wang Yu Gan Xinwen Yao Leopold Schmetterer Chuanqing Zhou Yikai Su John Hopcroft Center for Computer Science Shanghai Jiao Tong University Shanghai China University of Alabama AL USA Singapore Eye Research Institute Singapore National Eye Centre Singapore School of Chemical and Biomedical Engineering Nanyang Technological University Singapore School of Biomedical Engineering Shanghai Jiao Tong University Shanghai China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We investigate the signal digitization procedure in FD-OCT and propose a novel mixed-signal framework to model its image formation. It turns out FD-OCT is a shift-variant system, if conventional IDFT is used to recons... 详细信息

ISBN: (数字)9781943580828

ISBN: (纸本)9781728176567

关键词： optical coherence tomography Two dimensional displays Asia optical fiber {1. Image reconstruction Photonics

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Topologically Protected Quantum Entanglement Emitters

Research Square

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Research Square 2021年

作者： Wang, Jianwei Dai, Tianxiang Ao, Yutian Bao, Jueming Mao, Jun Chi, Yulin Fu, Zhaorong You, Yilong Chen, Xiaojiong Zhai, Chonghao Tang, Bo Yang, Yan Li, Zhihua Yuan, Luqi Gao, Fei Lin, Xiao Thompson, Mark G. O’Brien, Jeremy L. Li, Yan Hu, Xiaoyong Gong, Qihuang State Key Laboratory for Mesoscopic Physics School of Physics Peking University Beijing100871 China Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation ZJU-Hangzhou Global Science and Technology Innovation Center College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China Quantum Engineering Technology Labs H. H. Wills Physics Laboratory Department of Electrical and Electronic Engineering University of Bristol BristolBS8 1FD United Kingdom Department of Physics The University of Western Australia Perth6009 Australia Frontiers Science Center for Nano-optoelectronics Collaborative Innovation Center of Quantum Matter Peking University Beijing100871 China Collaborative Innovation Center of Extreme Optics Shanxi University Shanxi Taiyuan030006 China Peking University Yangtze Delta Institute of Optoelectronics Jiangsu Nantong226010 China

Entanglement and topology both portray nature at the fundamental level but in different manners. Entangled states of quantum particles are intrinsically sensitive to environment, whereas topological phases of matters represent natural robustness against environmental perturbations. Harnessing topology physics to protect entanglement thus has a great potential for reliable quantum applications. However, generating topologically-protected entanglement remains a significant challenge, which requires operating complex quantum devices in combined extreme conditions. Here we report topologically-protected quantum entanglement emitters, that emit topological Einstein-Podolsky-Rosen entangled state and topological multiphoton entangled state from a monolithically-integrated plug-and-play silicon-photonic chip in ambient conditions. The device emulating a photonic anomalous Floquet insulator allows the generation of up to four-photon topological entangled states at nontrivial edge modes. More importantly, we show that the Einstein-Podolsky-Rosen entanglement emitters can be topologically protected against artificial structure defects, by comparing tomographically measured fidelities of 0.968 ± 0.004 and 0.951.± 0.01.for the perfect and defected emitters, respectively. Our topologically-protected entanglement emitters may find applications in photonic quantum computation and quantum simulation, and in the study of quantum topological physics. © 2021. CC BY.

关键词： Quantum entanglement

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