风振对OPGW偏振态和通信的影响  

Effect of wind vibration on polarization of OPGW and communication

作　　者：赵晗祺 连伟华 吴斌 黄强 洪丹轲 谢尧 ZHAO Hanqi;LIAN Weihua;WU Bin;HUANG Qiang;HONG Danke;XIE Yao(China Southern Power Grid,Guangzhou 510530,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]南方电网责任有限公司,广州510530 [2]华中科技大学武汉光电国家研究中心,武汉430074

出　　处：《光通信技术》2021年第3期58-62,共5页Optical Communication Technology

基　　金：中国南方电网科研项目(0000002020030304XT00002)资助。

摘　　要：光纤复合架空地线(OPGW)中光信号的偏振态会因风振而改变,进而导致系统性能的劣化。为了了解风振对OPGW偏振态的影响,通过实验模拟了在不同摆动情况下OPGW的偏振态变化,并基于所测试的数据分析了偏振态的变化规律和风振对相干光通信的影响,给出了相干光通信系统中所需要补偿算法的计算依据。实验结果表明:2种风振导致的信号光偏振态旋转速度分别达到700 r ad/s和7 kr ad/s,接收端需补偿该量级速度的偏振态变化。The polarization of optical signal in optical fiber composite overhead ground wires(OPGW)will change due to wind vibration,which leads to the degradation of the system performance.In order to understand the effect of wind vibration on the polarization state in OPGW,and polarization state of OPGW changes under different swing conditions are simulated by experiments.Based on the measured data,the paper analyzes the rule of the polarization state change and concludes how it influences the coherent optical communication system,and gives the calculation basis for compensation algorithm in coherent optical communication system.The experimental results show that the rotation speed of signal polarization caused by the two kinds of wind vibration is 700 rad/s and 7 krad/s respectively,and the receiver needs to compensate for this magnitude velocity of the polarization state change.

关 键 词：风振现象 光学偏振态 光纤复合架空地线 相干光通信算法 

分 类 号：TN914[电子电信—通信与信息系统]