激光通信中马赫曾德调制器无抖动偏置控制技术

丁良; 吴志勇; 李学良; 谷雨聪; 胡金田; 尹景隆

doi:doi:10.3788/irla201948.1218001

红外与激光工程, 2019, 48 (12): 1218001, 网络出版: 2020-02-11

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

论文大纲

丁良 ^1,2吴志勇 ¹李学良 ¹谷雨聪 ^1,2胡金田 ^1,2尹景隆 ^1,2

作者单位

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

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。

Abstract

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.

参考文献

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丁良, 吴志勇, 李学良, 谷雨聪, 胡金田, 尹景隆. 激光通信中马赫曾德调制器无抖动偏置控制技术[J]. 红外与激光工程, 2019, 48(12): 1218001. Ding Liang, Wu Zhiyong, Li Xueliang, Gu Yucong, Hu Jintian, Yin Jinglong. Ditherless bias control technique for Mach-Zehnder modulator in laser communication[J]. Infrared and Laser Engineering, 2019, 48(12): 1218001.

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