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International Conference on optical communications and networks (ICOCN)

作者： Yixiao Zhu Xiansong Fang Lina Man Fan Zhang Weisheng Hu State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China State Key Laboratory of Advanced Optical Communication System and Networks Peking University Beijing China

We propose a hardware-efficient single-ended coherent receiver structure using two arbitrary output tributaries of a 3×3 coupler. We experimentally demonstrate 1.008-Tb/s line rate (820-Gb/s net rate) PS-64-QAM s... 详细信息

ISBN: (数字)9798350367652

ISBN: (纸本)9798350367669

关键词： optical fiber couplers Receivers Couplers Coherence Passive optical networks Standards Periodic structures

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Driverless 400-Gbps/λ PS-PAM16 Transmission Using Packaged 60-GHz Thin-Film LiNbO3 Modulator with 16-fJ/bit Energy Efficiency

Driverless 400-Gbps/λ PS-PAM16 Transmission Using Packaged ...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Wang, Shangcheng Yang, Yu Xu, Zhaopeng Liu, Lulu Qiao, Gang Ji, Honglin Wei, Jinlong He, Zhixue Hu, Weisheng Peng Cheng Laboratory Shenzhen China Shanghai Jiao Tong University State Key Lab of Advanced Optical Communication Systems and Networks Shanghai China

ISBN: (纸本)9798350312614

We experimentally demonstrated line rate 300-Gb/s PAM4 and 400-Gb/s probabilistically shaped (PS)-PAM16 transmission using packaged thin-film LiNbO3 modulators with only 550-mVpp CMOS-class driving voltage requiring no radio-frequency (RF) amplifiers. Net 296-Gbit/s PS-PAM16 transmission is achieved using 60-GHz transceivers with only 15.5-fJ/bit energy efficiency © 2023 IEEE.

关键词： High energy efficiency High-speed optical interconnects IM-DD LiNbO3 modulator

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Accurate and broadband manipulations of harmonic amplitudes and phases to reach 256 QAM millimeter-wave wireless communications by time-domain digital coding metasurface

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National Science Review 2022年第1期9卷 36-46页

作者： Ming Zheng Chen Wankai Tang Jun Yan Dai Jun Chen Ke Lei Zhang Cheng Zhang Jin Yang Lianlin Li Qiang Cheng Shi Jin Tie Jun Cui Institute of Electromagnetic Space Southeast University State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Peking University National Mobile Communications Research Laboratory Southeast University State Key Laboratory of Millimeter Waves Southeast University Center of Intelligent Metamaterials Pazhou Laboratory

We propose a theoretical mechanism and new coding strategy to realize extremely accurate manipulations of nonlinear electromagnetic harmonics in ultrawide frequency band based on a time-domain digital coding metasurface(TDCM).Using the proposed mechanism and coding strategy,we design and fabricate a millimeter-wave(mmWave) TDCM,which is composed of reprogrammable meta-atoms embedded with positive-intrinsic-negative *** controlling the duty ratios and time delays of the digital coding sequences loaded on a TDCM,experimental results show that both amplitudes and phases of different harmonics can be engineered at will simultaneously and precisely in broad frequency band from 22 to33 GHz,even when the coding states are imperfect,which is in good agreement with theoretical *** on the fabricated high-performance TDCM,we further propose and experimentally realize a large-capacity mmWave wireless communication system,where 256 quadrature amplitude modulation,along with other schemes,is *** new wireless communication system has a much simpler architecture than the currently used mmWave wireless systems,and hence can significantly reduce the hardware *** believe that the proposed method and system architecture can find vast application in future mmWave and terahertz-wave wireless communication and radar systems.

关键词： metasurface time-domain digital coding accurate and broadband harmonic control 256 QAM millimeter-wave wireless communications

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Hierarchical Codebook Design Using Scale-Changeable Reconfigurable Holographic Surfaces in Near-Far Field communications

Hierarchical Codebook Design Using Scale-Changeable Reconfig...

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2024 IEEE Global communications Conference, GLOBECOM 2024

作者： Zhang, Shupei Di, Boya Zhang, Hongliang Poor, H. Vincent Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Beijing China Princeton University Department of Electrical and Computer Engineering Princeton United States

ISBN: (纸本)9798350351255

Reconfigurable holographic surfaces (RHSs) have been proposed as a cost-effective and power-efficient solution for extremely large-scale arrays, where the amplitude of electromagnetic waves radiated at each element is controlled to achieve high directive gain. However, the complexity of acquiring real-time channel state information (CSI) required for beamforming is prohibitively high, especially when the near-field expansion brought by the large-scale RHS is considered. In this paper, we propose a codebook-based beam training scheme for a large-scale RHS-enabled communication system to bypass CSI estimation. Unlike traditional phase-controlled arrays, the amplitude-controlled property of the RHS implies that each RHS element can be selectively activated. This motivates an array reconfiguration method where a scale-changeable RHS array is constructed to generate gain-flat beams with different coverage in the angle-range domain. A hierarchical RHS codebook is then proposed where the coverage of the codewords in each layer is progressively refined. To address the substantial beam search overhead in the near-far field, a two-stage beam training scheme is performed in the proposed codebook, thereby reducing the overhead to a logarithmic level of the element number. The simulation results show that the proposed scheme performs better than phased arrays given the same input power in terms of sum rate, and it also approaches the upper bound achieved by the exhaustive search at a significantly reduced overhead. © 2024 IEEE.

关键词： Antenna phased arrays

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Digital Coherent Fronthual Employing Sample Bits Interleaving and Uneven 16-QAM 20

Digital Coherent Fronthual Employing Sample Bits Interleavin...

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20th International Conference on optical communications and networks, ICOCN 2022

作者： Chen, Xi Li, Jiaji Zhu, Yixiao Yin, Longjie Zhuge, Qunbi Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

We propose and experimentally demonstrate a digital coherent fronthaul system exploiting sample bits interleaving and uneven 16-QAM. The results indicate that 6dB EVM sensitivity enhancement can be achieved compared w... 详细信息

ISBN: (数字)9781665458986

ISBN: (纸本)9781665458986

关键词： Wireless communication Wireless sensor networks Sensitivity OFDM Symbols optical fiber communication Reliability

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Generalized Carrier Assisted Differential Detection Receiver with Simplest Structure

Generalized Carrier Assisted Differential Detection Receiver...

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2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2022

作者： Zhu, Yixiao Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

We propose a generalized carrier assisted differential detection receiver featuring simplest structure of 2×2 optical coupler and 2 single-ended photodiodes. The performance of the designed receiver is comprehens...

ISBN: (纸本)9798350350012

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MZM Nonlinearity Enabled Uneven PAM-4 for EVM Reduction in Digital Mobile Fronthaul 20

MZM Nonlinearity Enabled Uneven PAM-4 for EVM Reduction in D...

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20th International Conference on optical communications and networks, ICOCN 2022

作者： Li, Jiaji Chen, Xi Wu, Jiahao Zhu, Yixiao Hu, Weisheng Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Shanghai200240 China

We propose and experimentally demonstrate a digital mobile fronthaul scheme utilizing the non-linearity of MZM. The EVM can be reduced by 6.17% and 2.19% at-9dBm ROP for BtB and after 10km SSMF transmission, respectiv... 详细信息

ISBN: (数字)9781665458986

ISBN: (纸本)9781665458986

关键词： Pulse amplitude modulation

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Generalized Carrier Assisted Differential Detection Receiver with Simplest Structure

Generalized Carrier Assisted Differential Detection Receiver...

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2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO/PR 2022

作者： Zhu, Yixiao Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

关键词： Electronics industry

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A Random Amplitude Modulated Continuous Wave Lidar system Based on Lens-assisted Beam Steering for Ranging and Velocimetry

A Random Amplitude Modulated Continuous Wave Lidar System Ba...

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2023 Opto-Electronics and communications Conference, OECC 2023

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

A non-coaxial Lidar system based on lens-assisted beam-steering technology is demonstrated. A coherent random amplitude modulated continuous wave detection method is applied in the Lidar system to enable the capabilit... 详细信息

ISBN: (纸本)9781665462136

关键词： optical radar

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PLC Splitter Encoded with Waveguide Bragg Grating by Femtosecond Laser Inscribing Technique for PON Monitoring

PLC Splitter Encoded with Waveguide Bragg Grating by Femtose...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Hu, Jin Liu, Xu Ma, Lin Li, Heyuan He, Zuyuan State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China Zhejiang Lab Hangzhou311121 China

We demonstrate a PLC splitter encoded by Bragg waveguide gratings with a wavelength interval of 4 nm and an adjustable reflectance of up to 40% using a femtosecond laser inscribing technique for passive optical networ... 详细信息

ISBN: (纸本)9798350312614

关键词： Femtosecond laser optical network monitoring PLC splitter Waveguide Bragg Gratings

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