Optical phase-locked loop technology in inter-satellite high-speed coherent laser communication systems

被引：0

作者：

Chang S. ^{[1
]}

Tong S. ^{[1
]}

Jiang H. ^{[1
]}

Liu Y. ^{[1
]}

Song Y. ^{[1
]}

Dong Y. ^{[2
]}

Dong K. ^{[1
]}

Dong Y. ^{[2
]}

Zhang P. ^{[1
]}

Nan H. ^{[1
]}

机构：

[1] National Defense Key Discipline Laboratory on Space-Ground Laser Communication, Changchun University of Science and Technology, Changchun, 130022, Jilin

[2] State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai

来源：

Guangxue Xuebao/Acta Optica Sinica | 2017年 / 37卷 / 02期

关键词：

Error transfer function; Optical communications; Phase noise; Receiving sensitivity;

D O I：

10.3788/AOS201737.0206004

中图分类号：

学科分类号：

摘要：

A homodyne coherent laser communication system has the characteristics of high speed and long-distance transmission, and it plays an important role in the establishment of inter-satellite high-speed laser communication network. The operating principle of optical phase-locked loop is analyzed, and the corresponding mathematical model is established. The open-loop and closed-loop transfer functions of optical phase-locked loop are obtained. The error transfer function is derived. The influencing factors on loop bandwidth are analyzed. The phase noise error of phase-locked loop is analyzed, and the relationship among error factor, detection sensitivity and loop bandwidth is established. The optimized bandwidth of phase-locked loop is 1.5 MHz, and the bit error rate of the receiver is tested. The receiving sensitivity of -41.4 dBm and the bit error rate of 10-7 are obtained when the communication rate is 5 Gbit/s and the modulation mode is binary phase shift keying. © 2017, Chinese Lasers Press. All right reserved.

引用

页数：9

共 16 条

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