检索结果-内蒙古大学图书馆

Frontiers in Optics + Laser Science 2023, FiO, LS 203: Part of Frontiers in Optics + Laser Science 2023

作者： Wang, Ya Yang, Ruoao Chen, Zhendong Pan, Duo Luo, Bin Zhang, Zhigang Chen, Jingbiao State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing100876 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Center for Quantum Information Technology Peking University Beijing100871 China

A 1.2 GHz, 106 fs stretched-pulse mode-locked laser was demonstrated, with > 700 mW output power. To the best of our knowledge, this is the highest repetition rate from NPE mode locked Yb: fiber lasers. © Opti... 详细信息

ISBN: (纸本)9781957171296

关键词： Diode lasers Fiber lasers Frequency combs Laser sources Mode-locked fiber lasers Ultrafast lasers

来源：评论

学校读者我要写书评

暂无评论

The adverse effects of practical passive optical network on continuous-variable quantum key distribution downstream access networks

The adverse effects of practical passive optical network on ...

引用

2023 Applied Optics and Photonics China: optical Sensing, Imaging, and Display Technology and Applications;and Biomedical Optics, AOPC 2023

作者： Huang, Luyu Chen, Ziyang Wang, Xiangyu Yu, Song State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing100876 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics and Center for Quantum Information Technology Peking University Beijing100871 China

ISBN: (纸本)9781510672321

An quantum access network, connecting multiple end users and a backbone network in a scalable and cost-e_ective way with tree or star structures, is suitable to combine with continuous-variable quantum key distribution for network security. Under the realistic condition, in a passive optical network in optical distribution network achieved by a practical passive beam splitter, it is hard to divide the signal into 1=n parts evenly. To well quantify the impact of the imperfection, we modify the formula for secret key rate calculation with the imperfection e_ect and conduct numerical simulations. The results indicate that if the communication parties neglect this imperfection, Eve can attack the entire network and attain information without the parties' awareness. © 2023 SPIE. All rights reserved.

关键词： Quantum cryptography

来源：评论

学校读者我要写书评

暂无评论

Analysis of the Asymmetry of Erbium-Doped Fiber Length in Fiber RF Transmission

Analysis of the Asymmetry of Erbium-Doped Fiber Length in Fi...

引用

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

作者： Lu, Jinze Gao, Hao Zhao, Zhuoze Cheng, Jiahui Luo, Bin Yu, Song Guo, Hong Beijing University of Posts and Telecommunications State Key Laboratory of Information Photonics and Optical Communications Beijing100876 China Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Center for Quantum Information Technology Beijing100871 China

ISBN: (纸本)9798350311426

Bidirectional erbium-doped fiber amplifiers(Bi-EDFAs) are needed for optical amplification in long distance fiber frequency transmission. Erbium-doped fiber is used in optical amplifiers. With the increase of the asymmetric length of erbium-doped fiber, the transmission stability of the system will be deteriorated. We built a simulation platform for fiber frequency transmission, and set erbium fiber with different lengths based on it to observe its influence on frequency stability. The results show that the stability of the system decreases obviously with the increase of the asymmetric length of the Erbium fiber. © 2023 IEEE.

关键词： EDFA frequency transmission system simulation

来源：评论

学校读者我要写书评

暂无评论

Simulation of Residual Dispersion on Stability of optical Fiber Frequency Transfer system

Simulation of Residual Dispersion on Stability of Optical Fi...

引用

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

作者： Gao, Hao Zhao, Zhuoze Cheng, Jiahui Luo, Bin Yu, Song Guo, Hong Beijing University of Posts and Telecommunications State Key Laboratory of Information Photonics and Optical Communications Beijing100876 China Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Center for Quantum Information Technology Beijing100871 China

ISBN: (纸本)9798350311426

Residual dispersion is a key factor affecting the stability of fiber optic frequency transfer system. For long-distance stable frequency transfer, dispersion compensation fiber (DCF) is used to compensate for the dispersion of the fiber link. We simulate a frequency transmission system with different dispersion compensation over a transmission distance of 500 km. The results show a significant increase in frequency stability with decreasing residual dispersion. Compared to dispersion-free compensation, the stability can be improved by two orders of magnitude when dispersion compensation reaches 100%. © 2023 IEEE.

关键词： frequency transfer residual dispersion system stability

来源：评论

学校读者我要写书评

暂无评论

Scalable low-modal-crosstalk mode-group demultiplexer for MDM transmission over MMF

Scalable low-modal-crosstalk mode-group demultiplexer for MD...

引用

2023 International Academic Conference on Optics and Photonics, IACOP 2023

作者： Cui, Jian Deng, Yu Liu, Zhuo Hao, Bin Tan, Daiwei Wu, Chao Zhang, Leimin Li, Juhao He, Yongqi Wan, Qi Department of Networks China Mobile Communications Group Co. Ltd. Beijing100033 China State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Beijing100871 China

ISBN: (纸本)9781510672543

Weakly-coupled mode-division multiplexing (MDM) transmission technique over widely-deployed multimode fiber (MMF) is considered a promising approach to enhance the capacity of optical fiber communication systems. In order to be compatible with cost-efficient intensity-modulation/direct-detection (IM/DD) systems, effective mode-group demultiplexing approaches to simultaneously receive each mode group of MMF are highly desired. In this paper, we propose a scalable low-modal-crosstalk mode-group demultiplexer over MMF using multi-plane light conversion (MPLC), in which input Hermite-Gaussian (HG) modes of MMF are first converted to bridging modes that composed of HG00 modes distributed as a right-angled triangle in Cartesian coordinates, and then each HG00 mode belonging to the same mode group are respectively converted to different HGn0 modes at the same output for simultaneous detection. With the help of bridging modes, the MPLC-based mode-group demultiplexer can scale to demultiplex more mode groups with relatively few phase masks. A 5 mode-group demultiplexer is also design for demonstration, and simulation results show that the modal-crosstalk are lower than -22.26 dB for all mode groups. © 2023 SPIE.

关键词： Multimode fibers

来源：评论

学校读者我要写书评

暂无评论

Single-Wavelength Net 1 Tb/s Transmission in SMF and 6.4 Tb/s in Weakly-Coupled 7-Core MCF Using a Phase- and Polarization-Diverse Direct Detection Receiver in Jones space

Single-Wavelength Net 1 Tb/s Transmission in SMF and 6.4 Tb/...

引用

2023 Opto-Electronics and communications Conference, OECC 2023

作者： Wu, Qi Li, Xueyang Zhu, Yixiao Cheng, Chen Xu, Zhaopeng Li, Jiali He, Zhixue Hu, Weisheng Peng Cheng Laboratory Shenzhen518000 China Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Department of Electronic Engineering Shanghai200240 China

ISBN: (纸本)9781665462136

We demonstrate a record single-wavelength net 1.04-Tb/s transmission over 40-km SMF using 56.5-GHz Jones-space direct-detection receiver with the highest electrical spectral efficiency of 18.4 b/s/Hz. Using the 42-km weakly-coupled 7-core multi-core fiber, we achieve a net 6.49-Tb/s signal transmission for large-scale and high-capacity data center interconnects. © 2023 IEEE.

关键词： Spectrum efficiency

来源：评论

学校读者我要写书评

暂无评论

Divided GHz burst mode amplification to mJ burst energy and kHz burst rate

引用

Chinese Optics Letters 2025年第1期23卷 72-75页

作者： Yunfeng Wu Bowei Yang Zhe Lin Ruoao Yang Xing Chen Yanrong Song Zhigang Zhang School of Physics and Optoelectronic Engineering Beijing University of TechnologyBeijing 100124China State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing 100871China State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China

We demonstrated a divided pulse amplification of burst pulse *** intraburst rate is 1 GHz,and the burst rate ranges from 1.5 k Hz to 15 *** the pump power of 100 W,the burst pulse energy is adjustable from 2.2μJ to 2... 详细信息

关键词： burst-mode pulse divided pulse amplification high repetition rate fiber laser

来源：评论

学校读者我要写书评

暂无评论

Calibration of Fiber-Optic Time Synchronization system over 800km

Calibration of Fiber-Optic Time Synchronization System over ...

引用

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

作者： Dong, Jiameng Wang, Zhaohui Zhang, Rui Yu, Song Luo, Bin Guo, Hong School of Electronic Engineering State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing China School of Electronics Center for Quantum Information Technology Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Beijing China

ISBN: (纸本)9798350311426

Due to the excellent performance in accuracy and stability, fiber-optic time synchronization is becoming a key technology in the field of time-frequency metrology. And the accuracy of fiber-optic time synchronization system mainly depends on asymmetry calibration. Here we study the calibration of time synchronization system over 800km laboratory fiber link. Asymmetry caused by chromatic dispersion, bidirectional EDFAs, sending and receiving devices are investigated. After calibration, the residual of clock difference between two sites is 56.80ps, and the timing jitter is 33.91ps. By further optimizing the whole system and the method of calibration, a system with accuracy better than 50ps over thousands of kilometers fiber link is expected to be obtained in the future. © 2023 IEEE.

关键词： accuracy asymmetry calibration fiber link time synchronization system

来源：评论

学校读者我要写书评

暂无评论

Generalized Carrier Assisted Differential Detection Receiver with Simplest Structure

Generalized Carrier Assisted Differential Detection Receiver...

引用

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

关键词：

来源：评论

学校读者我要写书评

暂无评论

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

Digital Coherent Fronthual Employing Sample Bits Interleavin...

引用

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

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：