基于PID反馈环路的M-Z调制器偏置控制系统设计

Design of Bias Control System of M-Z Modulator Based on PID Feedback Loop

文章设计了一种基于PID反馈环路的M-Z调制器偏置控制系统,所设计的偏置控制系统能够随着环境变化对M-Z调制器输出光功率自动跟踪,并通过反馈环路实时调整调制器偏置工作点。该系统应用于卫星遥测中的射频光纤传输链路,在?40℃^+70℃温度范围内可维持M-Z调制器输出光功率稳定度在±0.1 dBm内,具备较高的可靠性、实用性以及技术成熟度。

In this paper,a bias control system of M-Z modulator based on PID feedback loop is designed.The bias control system can automatically track the output optical power of M-Z modulator as the environment changes,and adjust the bias working point of modulator in real time through feedback loop.This system is used in the radio frequency optical fiber transmission link of satellite telemetry.It can maintain the output optical power stability of M-Z modulator within±0.1 dBm in the temperature range of–40℃^+70℃,and has high reliability,practicability and technical maturity.