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

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A Giant interferometric fiber optic gyroscope with Low Self-Noise for Geophysical Rotation Sensing

A Giant interferometric fiber optic gyroscope with Low Self-...

引用

CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Huang, Huimin Cao, Yujia Zhu, Lanxin Chen, Yanjun Wang, Wenbo Shi, Fangshuo Li, Zhengbin The State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China Institute of Geophysics China Earthquake Administration Beijing100081 China

A low Self-noise giant interferometric fiber optic gyroscope system has been built for geophysical rotation sensing. The gyroscope 24-hour stability test shows that sensitivity can reach 1.65 × 10-9 rad/s/√Hz. &... 详细信息

关键词： Gyroscopes

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Fast and Accurate Estimation of MDL - Induced SNR Penalty in SDM Link with Non-Uniform Noise Loading

Fast and Accurate Estimation of MDL - Induced SNR Penalty in...

引用

Asia communications and Photonics Conference and Exhibition (ACP)

作者： Tonghui Ji Qi Wu Zhaopeng Xu Honglin Ji Yu Yang Lulu Liu Shangcheng Wang Zhongliang Sun Junpeng Liang Linsheng Fan Jianwei Tang Jinlong Wei Juhao Li Weisheng Hu Pengcheng Laboratory Shenzhen China State Key Lab of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China State Key Laboratory of Advanced Optical Communication Systems & Networks Peking University Beijing China

We propose a fast and accurate estimation method of MDL-induced SNR penalty with non-uniform noise loading in SDM link. The proposed approach substantially saves the time cost while maintaining an estimation error wit... 详细信息

ISBN: (数字)9798350379266

ISBN: (纸本)9798350379273

关键词： optical losses Costs Accuracy Simulation Loading Propagation losses optical fiber communication Numerical models Signal to noise ratio Photonics

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Multi-Task Learning: Towards Low-Complexity Neural Network Nonlinearity Compensation in Coherent optical systems

Multi-Task Learning: Towards Low-Complexity Neural Network N...

引用

Asia communications and Photonics Conference and Exhibition (ACP)

We propose multi-task learning based NN equalization for nonlinearity compensation in coherent optical system. Compared with conventional NN equalization, 30% complexity reduction is achieved in an 800-Gb/s PDM-16QAM ... 详细信息

ISBN: (数字)9798350379266

ISBN: (纸本)9798350379273

关键词： Q-factor Equalizers Symbols Artificial neural networks optical computing optical fiber networks Multitasking Real-time systems Complexity theory Photonics

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Micro-Bending Influence on Mode-Dependent Loss 15

Micro-Bending Influence on Mode-Dependent Loss

引用

15th IEEE International Conference on advanced Infocomm Technology, ICAIT 2023

作者： Liang, Junpeng Qiao, Gang Wei, Jinlong Li, Juhao Yang, Yu Xu, Zhaopeng Liu, Lulu Wang, Shangcheng Wu, Qi Hu, Weisheng Peng Cheng Laboratory Dept. of Circuits and System Shenzhen China Peking University State Key Lab of Advanced Optical Communication Systems and Network Beijing China

ISBN: (纸本)9798350314120

Micro-bending with random curvature is usually used to model the mode coupling in few mode fiber (FMF). However, previous models overlooked the accompanied mode dependent loss (MDL) and neglected the order constraints of coupling loss between different modes. In this work, we calculate out the accompanied loss of each mode by using the finite element method. The results show that MDL always increases with bending curvature due to the high-order modes have larger loss than low-order modes. This observation has been confirmed by experiments. Finally, we compare the multi-segment FMFs model with and without considering the accompanied MDL, the results show that micro-bending would degrade the system performance especially when considering the accompanied MDL. © 2023 IEEE.

关键词： MEMS

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Long Range Distributed Acoustic Sensor with Phase Noise Compensation 3

Long Range Distributed Acoustic Sensor with Phase Noise Comp...

引用

3rd EAGE Workshop on Fiber Optic Sensing for Energy Applications

作者： Xiao, Z. Chen, J. Ji, J. Li, H. Deng, Y. Liu, Q. He, Z. State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University 800 Dongchuan Road Minhang Shanghai200240 China

ISBN: (纸本)9789462824836

In this work, we propose a novel phase noise compensation (PNC) method aiming at mitigating impact of the laser phase noise on DAS, by deploying an auxiliary interferometer together with an appropriate two-step compensation algorithm. In experimental demonstration 100 µs linear frequency modulation (LFM) laser pulses are injected into sensing fiber without any optical amplification under different strategies (PNC on / off). Strain resolution of 55 pΕ/√Hz with 47 km measurement distance and 4.3 m spatial resolution is realized in demonstration system. The concept-proof experiment suggested that our PNC scheme provides an effective solution for long range DAS facing the nonideal light source phase noise level. © 2023 3rd EAGE Workshop on Fiber Optic Sensing for Energy Applications. All rights reserved.

关键词： Fiber optic sensors

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1780-km Reach Extension with Equalization-Enhanced Phase Noise Compensation Using 3-MHz LO for WDM Coherent Transmission

1780-km Reach Extension with Equalization-Enhanced Phase Noi...

引用

Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yixiao Zhu Xiansong Fang Xiang Cai Yimin Hu Weisheng Hu Fan Zhang 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 School of Electronics Peking University Beijing China Pengcheng Laboratory Shenzhen China

ISBN: (数字)9798350379266

ISBN: (纸本)9798350379273

We propose and experimentally demonstrate an efficient equalization-enhanced phase noise compensation scheme for long-haul coherent transmission. The distance is extended by 1780km and 470km for $\mathbf{788.4}-\mathbf{Gb}/\mathbf{s}/\boldsymbol{\lambda}$ and 968.4- $\mathbf{Gb}/\mathbf{s}/\boldsymbol{\lambda}$ line rate WDM transmission, respectively, using 3-MHz LO and receiver-side dispersion compensation.

关键词： Phase noise Laser noise Asia Wavelength division multiplexing optical fiber communication optical transmitters Time-domain analysis Dispersion Photonics

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Narrow-linewidth and frequency-agile FMCW laser on the Si3N4 -on-SOI photonic platform

Narrow-linewidth and frequency-agile FMCW laser on the Si3N4...

引用

CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Liu, Chuxin Li, Xinhang Guo, Yuyao Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a hybrid-integrated self-injection-locked laser on the Si3N4-on-SOI platform to generate FMCW signal with 9 kHz linewidth, 2 MHz repetition rate, and high linearity, supporting FMCW-LiDAR with refresh r... 详细信息

ISBN: (纸本)9781957171395

关键词： Linewidth

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A Frequency Shifting Scheme for On-chip optical Frequency Transfer

A Frequency Shifting Scheme for On-chip Optical Frequency Tr...

引用

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

作者： Qiu, Ziang Hu, Liang Chen, Jianping Wu, Guiling Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Department of Electronic Engineering Shanghai China Shanghai Jiao Tong University Shanghai Key Laboratory of Navigation and Location Based Services Shanghai China

ISBN: (纸本)9798350311426

We report a frequency shifting scheme for on-chip optical frequency transfer with low external circuit requirements. Serrodyne modulation method is used to achieve frequency shifting with high carrier and sideband suppression ratios for optical carriers, and the method is also suitable for a wide range of integrated platforms. We first demonstrate the feasibility of the scheme using a commercial phase modulator, which is able to produce a frequency shift of over 1 MHz, a carrier suppression ratio of over 50 dB, a sideband suppression ratio of over 37 dB and a conversion loss of about 0.08 dB. We also design a phase modulator on thin film lithium niobate platform with a low half wave voltage about 2.18 V, which greatly reduces the requirements of the external circuit voltage for frequency shifting, and can achieve a frequency shift above 1 GHz. Our proposed scheme verifies the feasibility of on-chip frequency shifting with low loss and high suppression ratio, and paves the way for the integration of optical frequency transfer systems. © 2023 IEEE.

关键词： frequency shifting optical frequency transfer phase modulator serrodyne modulatio thin film lithium niobate

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Amplitude-Invariant Phase Shifter Based on Carrier-Injection Mechanism for optical Phased Array

Amplitude-Invariant Phase Shifter Based on Carrier-Injection...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Yuan, Qiqi Xu, Weihan Ran, Shihuan Yang, Yunhong Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We present an amplitude-invariant phase shifter based on a PIN diode embedded in a Mach-Zehnder Interferometer for optical phased arrays. The dynamic power contrast is lower than 0.42 dB over a π phase shift. CLEO 20... 详细信息

ISBN: (纸本)9781957171395

关键词： Mach-Zehnder interferometers

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Amplitude-Invariant Phase Shifter Based on Carrier-Injection Mechanism for optical Phased Array

Amplitude-Invariant Phase Shifter Based on Carrier-Injection...

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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Yuan, Qiqi Xu, Weihan Ran, Shihuan Yang, Yunhong Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

关键词： Phase shifters

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