激光通信中马赫曾德调制器无抖动偏置控制技术  

Ditherless bias control technique for Mach-Zehnder modulator in laser communication

作　　者：丁良 吴志勇[1] 李学良 谷雨聪 胡金田 尹景隆 Ding Liang;Wu Zhiyong;Li Xueliang;Gu Yucong;Hu Jintian;Yin Jinglong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学材料科学与光电技术学院,北京100049

出　　处：《红外与激光工程》2019年第12期165-171,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金(51605465);中科院科研装备研制项目

摘　　要：为实现马赫曾德调制器(Mach-Zehnder Modulator,MZM)工作时偏置点的稳定控制,提出了一种基于平均光功率斜率值检测的简单有效的控制方案。首先,分析了MZM工作时偏置点稳定控制技术的重要性,从理论上研究了控制算法的可行性,然后,利用Matlab进行了仿真验证,最后在搭建的实验平台上进行了MZM工作偏置点稳定控制系统的实验验证。结果表明该控制方法是一种适用于多种调制格式的简单有效的无抖动偏置控制技术,并且实验观察结果表明系统误码率性能在72 h内没有下降,能稳定在10-9附近,有效地保证了激光通信调制系统工作的可靠性。In order to realize the stable control of the Mach-Zehnder modulator(MZM)operating bias point,a simple and effective control scheme based on the average optical power slope value detection was proposed.Firstly,the importance of MZM operating bias point stable control was analyzed.Then,the feasibility of the control algorithm was studied from the perspective of mathematical theory derivation.Then,the simulation verification was carried out by Matlab.Finally,the experiment of the MZM operating bias point stable control system was carried out on the built platform in the laboratory.The results show that this is a simple and effective ditherless bias control technology suitable for various modulation formats,and the experimental observation results show the performance of bite error rate of the system did not drop within 72 hours and maintain at 10-9,effectively ensuring the reliability of the modulation system MZM operation in laser communication.

关 键 词：激光通信 马赫曾德调制器 偏置控制 平均输出光功率 斜率值检测 

分 类 号：TN929.1[电子电信—通信与信息系统]