稳定性强的电光调制器反馈控制系统

Design of automatic feedback control system for electro-optic modulator

为了加快时域传导技术的发展,实现光电反馈信号的正确传导,设计一种新的电光调制器反馈自动控制系统。系统利用加法电路驱动MTCR-08电光调制器,给出调制光信号,提取其中5%的信息传导给光电探测器,得到放大电信号并对其实施滤波,同时通过乘法电路和积分电路对传导干扰进行估计,将传导干扰信号转化成光信号。利用加法电路在原光电反馈信号中删除传导干扰信号,最后通过MTCR-08电光调制器传导出准确的光电反馈信号。实验结果表明,所设计的系统稳定性强,信号锁定效果好。

In order to speed up the development of time domain transmission technology and realize correct conduction of photoelectric feedback signal,a new automatic feedback control system is designed. The designed system uses an adder circuit to drive the MTCR-08 electro-optic modulator. Extract 5% of the modulated optical signal transmission of information to the photoelectric detector to amplify and filter the signal. Meanwhile,the conduction interference is estimated by multiplication circuit and integrated circuit,which can convert the conduction interference signal into optical signal. Using addition circuit to delete interference signal in the original photoelectric feedback signal. Finally accurate feedback signal is derived through MTCR-08 electro-optic modulator. The experimental results show that the designed system has good stability and signal locking effect.