摘要
电光调制器的半波电压易受热积累及外界环境温度等影响发生漂移,进而影响调制信号传输质量。因此,提出通过光分路器进行电光检测的方法对半波电压的漂移进行检测,配合误差分析的方式判断、识别和控制漂移量大小的设计方案,利用模糊PID控制算法实现调制器半波电压高精度自动调节,并将自动控制系统应用于铌酸锂电光调制器,进行高传输速率调制实验。结果表明：采用半波电压自动控制技术,结合反馈控制算法,使电光调制器偏置电压始终位于调制特性曲线的中点,以保证调制信号的不失真传输,克服了半波电压漂移的问题。
The half wave voltageof electro-optic modulatoris easily affected by heat accumulation and environment temperature,and influence the transmission quality of the modulated signal.Therefore,a method for detecting the drift of half wave voltage by photoelectric detection by optical splitter is proposed.A design scheme forjudging,identifying and controlling the size of drift with the method of error analysis.High precision automatic regulation of half wave voltage by using fuzzy PID control algorithm,and it is applied to LiNbO3 modulator with high transmission rate test,the results show that：the bias voltage of modulator is always located in the middle of the linear region to guarantee undistorted modulation.The drift problem of half wave voltage is overcome.
作者
汪磊
闫继送
吕子敬
尹炳琪
Wang Lei;Yan Jisong;Lv Zijing;Yin Bingqi(The 41st Research Institute,CETC,Qingdao 266555,China)
出处
《国外电子测量技术》
2018年第6期75-79,共5页
Foreign Electronic Measurement Technology
关键词
电光调制
高速激光通信
半波电压自动控制
PID控制
electro-optic modulation
high speed laser communication
automatic of half wave voltage
PID control
