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检索条件"机构=State Key Laboratory on Advanced Optical Communication System and Networks"

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W-Band communication Transmitter Enabled by Silicon Photonic Microring Modulators

W-Band Communication Transmitter Enabled by Silicon Photonic...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Xuying Liu Wenjia Zhang Yue Jiang Zuyuan He State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We propose silicon micro-ring modulator (MRM) based W-band transmitter for next generation wireless communication. 14 Gb/s non-return-to-zero (NRZ) communication at 80 GHz carrier frequency have been experimentally demonstrated by utilizing off-chip electro-optic comb or two free running lasers and on-chip high-speed narrow-band micro-ring modulators. Error free wireless transmission without W-band amplifier can be achieved by using linear equalizers with 40-tap feed forward equalization (FFE).

关键词： Wireless communication Frequency modulation Transmitters Equalizers Laser noise Electro-optic modulators Silicon photonics

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Physical Aware Clustering Training Method for Integrated Photonic Convolution Neural Network with Nonlinear Distributed Weights

Physical Aware Clustering Training Method for Integrated Pho...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yue Jiang Wenjia Zhang Xuying Liu Wenyu Zhu Zuyuan He State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

The computing power of the Photonic Convolution Neural Network (CNN) have achieved Tera-level operations per second (OPS) for supporting machine vision algorithms. However, restrained by the nonlinear characteristics of weighting devices, it is hard to realize convergent training of Photonic CNN under poor controlling precision. In this paper we proposed a Physical Aware Clustering training method where the Physical Aware Cluster Quantizer is embed with the straight through estimator (STE) algorithm for integrated Photonic CNN with quantized and nonlinear distributed weights. Experiment shows that, by employing the upgraded STE methods (namely, STE plus), the Photonic CNN using micro ring weighting bank and PAM4 controlling modules achieves the nearly 99.3% accuracy ratio for Fashion MNIST recognition task, whereas only 41.5% of that by using baseline STE training algorithms with the same physical devices.

关键词： Training Time-frequency analysis Quantization (signal) Convolution Neural networks Clustering algorithms Prototypes

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A Solid-state FMCW Lidar system Based on Lens-assisted Beam Steering

A Solid-state FMCW Lidar System Based on Lens-assisted Beam ...

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Optoelectronics Global Conference (OGC)

作者： Xianyi Cao Kan Wu Chao Li Tianyi Li Jiaxuan Long Jianping Chen The State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9781665486996

We propose and demonstrate an all solid-state light detection and ranging (Lidar) system based on lens assisted beam steering (LABS) technology. A frequency modulated continuous wave (FMCW) coaxial Lidar system at 1550 nm with 16 scanning directions, 0.35° beam steering step and 1.05° total steering angle is demonstrated. The function of beam steering and 3D imaging are demonstrated. In FMCW ranging experiments, the Lidar system is measured to have 210 m ranging capability. The ranging accuracy can be further improved by applying phase noise compensation. This work proves the potential application of a new integrated beam steering technology in Lidar and demonstrates the way for a fully integrated Lidar system.

关键词： Phase noise Silicon compounds Laser radar Beam steering Three-dimensional displays Power demand Frequency modulation

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A novel slice error correction reconciliation for continuous-variable quantum key distribution

A novel slice error correction reconciliation for continuous...

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Quantum communications, Networking, and Computing (QCNC), International Conference on

作者： Lin Zhu Xue-Qin Jiang Han Hai Jisheng Dai Peng Huang Shengyuan Xue College of Information Science and Technology Donghua University Shanghai China State Key Laboratory of Advanced Optical Communication Systems and Networks Institute for Quantum Sensing and Information Processing Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9798331531591

ISBN: (纸本)9798331531607

Information reconciliation is a crucial process in continuous-variable quantum key distribution(CV-QKD) systems. The slice error correction (SEC) reconciliation is appropriate for short-distance CV-QKD. However, the efficiency of SEC reconciliation schemes is significantly influenced by noisy channels with low signal-to-noise ratios (SNRs). In this paper, we present an enhanced information reconciliation scheme, termed AC-SEC reconciliation, which adds the new Gaussian sequences c with the original Gaussian sequences y before quantization in the SEC reconciliation to obtain secret key sequences with high variance and reduce noise interferences. Simulation results demonstrate that compared with the traditional SEC reconciliation, the proposed information reconciliation has lower frame error rate (FER) and higher reconciliation efficiency, which can increase the secret key rate (SKR).

关键词： Quantization (signal) Error analysis Simulation Interference Error correction Quantum key distribution Noise measurement Iterative decoding Signal to noise ratio Quantum communication

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High resolution fiber grating dynamic strain sensor with broadband light

High resolution fiber grating dynamic strain sensor with bro...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Shuting Liu Qingwen Liu Shuangxiang Zhao Zuyuan He State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

A fiber grating strain sensing system based on self-reference mechanism was developed. The resolution is $34.6{\text{p}}\varepsilon /\sqrt {{\text{Hz}}}$ at 1kHz, which is several orders of magnitud better than tradit... 详细信息

ISBN: (数字)9781957171050

ISBN: (纸本)9781665466660

关键词： optical fiber sensors Electric potential optical fiber networks Lasers and electrooptics Fiber gratings Sensors Broadband communication

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Single-span IM/DD Transmission over 120-km SMF with a Silicon Photonic Mach-Zehnder Modulator and THP

Single-span IM/DD Transmission over 120-km SMF with a Silico...

引用

optical Fiber communication (OFC) Conference

作者： Jingchi Li Zhen Wang Xingfeng Li Yikai Su State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We experimentally demonstrate up to 120-km dispersion-uncompensated transmission in a SiP MZM-based IM/DD system. 28/42-Gbaud DSB PAM4 signal is transmitted over 80/120-km SMF enabled by Tomlinson-Harashima precoding ... 详细信息

ISBN: (纸本)9781557524669

关键词： optical filters optical fibers Mach-Zehnder interferometers Fading channels Filtering Precoding Silicon photonics

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Cherenkov Radiation from Graphene-Equivalent Hyperbolic Metamaterial

Cherenkov Radiation from Graphene-Equivalent Hyperbolic Meta...

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International Conference on Microwave and Millimeter Wave Technology Proceedings

作者： Zi-Wen Zhang Chao-Hai Du Jin Zhao Fan-Hong Li Juan-Feng Zhu State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing China

ISBN: (纸本)9781665482271

An electron-velocity-thresholdless terahertz (THz) Cherenkov radiation (CR) based on equivalent graphene plasmonic metamaterial (EGPMs) is proposed in this paper. A hyperbolic metamaterial (HMM) with hyperbolic equal frequency contours (EFC) is designed and demonstrated by periodically stacking the EGPSs, which mimics the EM characteristics of optical graphene in the THz band and can be used to imitate diverse optical graphene metamaterials. When a sheet electron beam flies over the surface, the electron-velocity-thresholdless CR will be generated since the HMM theoretically supports the infinite wavevector. The field distributions of the generated CR are analyzed for different electron energy values, and the results demonstrate the thresholdless CR phenomenon. The proposed thresholdless scheme may foster the application of the free-electron-driven integrated on-chip THz radiation source.

关键词： Integrated optics optical design Electron beams Graphene Stacking Hidden Markov models Plasmons

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Four-wave Mixing Interaction in a Topological Resonator

Four-wave Mixing Interaction in a Topological Resonator

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： Zhen Jiang Chaoxiang Xi Guangqiang He Chun Jiang State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We demonstrate a topological resonator implementing the four-wave mixing interaction based on valley photonic crystals. The topologically protected spontaneous four-wave mixing process in the topological resonator is ... 详细信息

ISBN: (数字)9781957171050

ISBN: (纸本)9781665466660

关键词： Four-wave mixing optical resonators Photonic crystals Nonlinear optical devices system-on-chip Proposals Electrooptical waveguides

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SnF with Balanced Storage Use in optical Circuit Switched (OCS) networks

SnF with Balanced Storage Use in Optical Circuit Switched (O...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Tasabbir Rakibul Hoque Weiqiang Sun Weisheng Hu State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

Balanced resource use is often critical to improve network stability and reduce cost. In this paper, we study the storage utilization in SnF circuit-switched networks and propose a storage balanced routing strategy based on time-shifted multilayer graph (TS-MLG). Simulation results show that balancing storage use can improve storage and link utilizations, therefore, improving the network performance.

关键词： Costs Simulation optical switches optical buffering optical fiber networks Routing Stability analysis

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1.02Tb/s CPRI-Equivalent Rate Direct Detection Transmission Supporting 1024-QAM Using IQ Interleaved Digital-Analog Radio-over-Fiber for Mobile Fronthaul

1.02Tb/s CPRI-Equivalent Rate Direct Detection Transmission ...

引用

Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yixiao Zhu Qunbi Zhuge Weisheng Hu State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

Large-capacity and high-fidelity radio-over-fiber (RoF) solution is attractive for 5G-advanced and 6G mobile fronthaul. In this work, we experimentally demonstrate 1.02Tb/s CPRI-equivalent data rate supporting 1024-QAM OFDM signal transmission with direct detection. The SNR improvement is benefited from both low peak-to-average power ratio (PAPR) property of IQ interleaved digital-analog RoF (DA-RoF), and joint optimization of rounding factor and scaling factor, offering a cost-effective solution.

关键词： 6G mobile communication Digital-analog conversion Asia Symbols Peak to average power ratio Optimization Signal to noise ratio

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