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Chip-Scale optical Clock Scheme Based on Dual-Wavelength Modulation Transfer Spectroscopy

Chip-Scale Optical Clock Scheme Based on Dual-Wavelength Mod...

2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2023

作者： Miao, Jie Yang, Qiaohui Lian, Jiqing Liu, Tianyu Pan, Duo Chen, Jingbiao Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Beijing100871 China Xidian University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Mechano-Electronic Engineering Xi'an710071 China Lanzhou Institute of Physics State Key Laboratory of Advanced Optical Communication Systems and Networks Lanzhou730000 China

ISBN: (纸本)9798350311426

In this paper we propose a new scheme to realize the chip-scale optical clock by using a dual-wavelength modulation transfer spectroscopy (DWMTS). The electro-optical modulator (EOM) and isolator in conventional modulation transfer spectroscopy which is complicated to be built on chip can thus be avoided. We remove the EOM and isolator at the price of an extra laser, which perform the volume optimization of the entire optical system, making the optical clock based on DWMTS to be a competitive candidate. © 2023 IEEE.

关键词： chip-scale frequency stability modulation transfer spectrum optical clock

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Chip-scale integrated optical gyroscope based on a multi-mode co-detection technique

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Photonics Research 2025年第2期13卷 319-329页

作者： SHUANG LIU JUNYI HU BINJIE LI BOYI XUE WENJIE WAN HUILIAN MA ZUYUAN HE School of Aeronautics and Astronautics Zhejiang University State Key Laboratory of Advanced Optical Communication Systems and Networks University of Michigan-Shanghai Jiao Tong University Joint InstituteShanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University

Gyroscopes are crucial components of inertial navigation systems, with ongoing development emphasizing miniaturization and enhanced accuracy. The recent advances in chip-scale optical gyroscopes utilizing integrated optics have attracted considerable attention, demonstrating significant advantages in achieving tactical-grade *** this paper, a new, to our knowledge, integrated optical gyroscope scheme based on the multi-mode co-detection technology is proposed, which takes the high-Q microcavity as its core sensitive element and uses the multi-mode characteristics of the microcavity to achieve the measurement of rotational angular velocity. This detection scheme breaks the tradition of optical gyroscopes based on a single mode within the sensitive ring to detect the angular rotation rate, which not only greatly simplifies the optical and electrical system of the optical gyroscope, but also has a higher detection accuracy. The gyroscope based on this detection scheme has successfully detected the Earth's rotation on a 9.2 mm diameter microcavity with a bias instability as low as 1 deg/h, which is the best performance among the chip-scale integrated optical gyroscopes known to us.

关键词： Effective refractive index Fiber optic gyroscopes Integrated optics Kerr effect optical systems Phase shift

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Intelligent Intra- and Inter-Channel Nonlinearity Compensation for Terabit-Per-Lambda 16QAM Long-Haul Transmission

Intelligent Intra- and Inter-Channel Nonlinearity Compensati...

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

作者： Fang, Xiansong Zhou, Lingjun Zhu, Yixiao Zheng, Jiayu Cai, Xiang Zhang, Fan School of Electronic and Computer Engineering Peking University Shenzhen China Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Shanghai China School of Electronics Peking University State Key Laboratory of Advanced Optical Communication System and Networks Beijing China Pengcheng Laboratory Shenzhen China

We experimentally demonstrate the combination of learned modified DBP and adaptive equalizer to compensate for intra- and inter-channel nonlinearity, in an 8× 125Gbaud 16QAM system over 1600km SSMF, showing a 97.... 详细信息

ISBN: (纸本)9798350312614

关键词： fiber nonlinearity machine learning XPM

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Net 4×500Gb/s IM/DD optical Interconnects with Interleaved PDM and Probabilistic Shaping 49

Net 4×500Gb/s IM/DD Optical Interconnects with Interleaved ...

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49th European Conference on optical communications, ECOC 2023

作者： Fang, Xiansong Zhu, Yixiao Chen, Xinyu Cai, Xiang Hu, Weisheng Zhang, Fan State Key Laboratory of Advanced Optical Communication System and Networks Frontiers Science Centre for Nano-optoelectronics School of Electronics Peking University Beijing100871 China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China Peng Cheng Laboratory Shenzhen518055 China

ISBN: (纸本)9781839539954

We propose an interleaved PDM WDM IM/DD scheme avoiding carrier fading with only one optical filter and one photodiode per polarization. With probabilistic shaping, we demonstrate 4×500Gb/s IM/DD interconnects of WDM PDM PS-PAM-16 signals with net spectral efficiency 3.60 b/s/Hz. © The Institution of Engineering & Technology 2023.

关键词： optical interconnects

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Net 1-Tb/s/lambda PS-256-QAM Coherent Transmission with a 3-MHz DFB Laser Enabled by Residual Carrier Modulation 49

Net 1-Tb/s/lambda PS-256-QAM Coherent Transmission with a 3-...

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49th European Conference on optical communications, ECOC 2023

作者： Fang, Xiansong Zhu, Yixiao Cai, Xiang Hu, Weisheng He, Zhixue Zhang, Fan State Key Laboratory of Advanced Optical Communication System and Networks Frontiers Science Centre for Nano-optoelectronics School of Electronics Peking University Beijing100871 China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China Peng Cheng Laboratory Shenzhen518055 China

ISBN: (纸本)9781839539954

We propose a residual-carrier modulation scheme for carrier frequency and phase recovery. With a low-cost 3-MHz linewidth DFB laser, we demonstrate a net rate of 1-Tb/s PS-256-QAM transmission over 80-km SSMF. The proposed scheme offers up to 2.77 bit/4D-symbol GMI improvement compared with time-domain pilots. © The Institution of Engineering & Technology 2023.

关键词： Quadrature amplitude modulation

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Influence of thermal effects on atomic Bloch oscillation

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Frontiers of physics 2024年第6期19卷 269-277页

作者： Guoling Yin Chi-Kin Lai Nana Chang Yi Liang Dekai Mao Xiaoji Zhou State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing 100871China Institute of Carbon-based Thin Film Electronics Peking UniversityTaiyuan 030012China

Advancements in the experimental toolbox of cold atoms have enabled the meticulous control of atomic Bloch oscillation(BO)within optical lattices,thereby enhancing the capabilities of gravity *** work delves into the impact of thermal effects on Bloch oscillation in 1D accelerated optical lattices aligned with gravity by varying the system's initial temperature,Through the application of Raman cooling,we effec-tively reduce the longitudinal thermal effect,stabilizing the longitudinal coherence length over the timescale of its *** atomic losses over multiple Bloch periods are measured,which are primarily attributed to transverse ***,we identify two distinct inverse scaling behaviors in the oscillation lifetime scaled by the corresponding density with respect to temperatures,implying diverse equilibrium processes within or outside the Bose-Einstein condensate(BEC)*** compe-tition between the system's coherence and atomic density leads to a rela-tively smooth variation in the actual lifetime versus *** find-ings provide valuable insights into the interaction between thermal effects and BO,offering avenues for the refinement of quantum measurement technologies.

关键词： Bloch oscillation optical lattice thermal effects cold atoms Raman cooling

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Single-Core 7.2-Tb/s (800-Gb/s×9) MDM Self-Homodyne Coherent Transmission over Weakly-Coupled 10-Mode Fibre 49

Single-Core 7.2-Tb/s (800-Gb/s×9) MDM Self-Homodyne Coheren...

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49th European Conference on optical communications, ECOC 2023

作者： Qiao, Gang Long, Chengbin Yang, Yu Xu, Zhaopeng Zuo, Mingqing Wang, Shangcheng Liu, Lulu Shen, Lei Luo, Jie Ji, Honglin He, Zhixue Chen, Zhangyuan Hu, Weisheng Li, Juhao Peng Cheng Laboratory Shenzhen China State Key Lab of Advanced Optical Communication Systems and Networks Peking University Beijing00871 China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China State Key Laboratory of Optical Fibre and Cable Manufacture Technology YOFC Wuhan China

ISBN: (纸本)9781839539954

We propose a mode-division-multiplexing (MDM) self-homodyne coherent system over weakly-coupled multiple-ring-core 10-mode fibre and experimentally demonstrate single-core 7.2-Tb/s (5.64-Tb/s net rate) transmission with 800-Gb/s data rate for each of the 9 information-bearing modes using 80-GBaud probabilistic constellation-shaped 64-QAM signals. © The Institution of Engineering & Technology 2023.

关键词： Single mode fibers

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optical Fiber Time Transfer Monitoring and Management system 8th

Optical Fiber Time Transfer Monitoring and Management System

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8th International Conference on Computing, Control and Industrial Engineering, CCIE 2024

作者： Li, Tianyuan Xie, Kunfeng Yang, Yansong Hu, Liang Chen, Jianping Wu, Guiling State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9789819769360

In the paper, we design a monitoring and management system (MMS) for optical fiber time transfer (OFTT) based on manager/agent model. The proposed system includes monitoring and management server (MM-Server), monitoring and management unit (MMU) on OFTT device, and the communication interfaces interconnecting these entities. Utilizing B/S architecture and the Model-View-Controller design pattern, the MM-Server effectively segregates data, service logic, and the user interface, thereby improving the system’s scalability. The scalable and persistent OFTT-MMS has been tested on a bidirectional time-division multiplexing same-fiber same-wavelength OFTT system. The results indicate that the OFTT-MMS are capable to acquire real-time operational status of the time transfer devices and links, identify and handle faults, as well as realize remote configuration and visual monitoring of system performance, which can effectively improve the reliability, security, and availability of the OFTT system. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： optical fibers

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Neural Channel Model-Aided Distributed Dispersion Manage Optimization for Mitigation of Nonlinearities and Dispersion in Fibre Transmission

Neural Channel Model-Aided Distributed Dispersion Manage Opt...

引用

2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Zeng, Chuyan Niu, Zekun Yang, Hang Shi, Minghui Hu, Weisheng Yi, Lilin State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

A distributed dispersion manage system is proposed for mitigating fibre nonlinearities and dispersion in fibre transmission through optimizing accumulated chromatic dispersion (aCD) distribution. 0.7 dB OSNR improveme... 详细信息

ISBN: (纸本)9798350379266

关键词： Chromatic dispersion

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PON Monitoring Method based on Novel optical Visual Splitter

PON Monitoring Method based on Novel Optical Visual Splitter

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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Zhu, Songlin Zhu, Yidai Fan, Xinyu He, Zuyuan Wireline Product Planning Department ZTE Corporation Shanghai China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China

We propose a novel visual optical splitter used in passive optical network (PON) architecture to realize PON monitoring with the help of a multi-wavelength optical time domain reflectometry (OTDR), which reduce 10 dB ... 详细信息

ISBN: (纸本)9798350379266

关键词： optical beam splitters

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