闭环反馈光纤放大器的设计  

Designed of closed-loop feedback opitcal fiber amplifier

作　　者：陈峰 吕宏伟[1] 韦佳天 杨小亮[1] 伍能[1] 张新立[1] CHEN Feng;LYU Hongwei;WEI Jiatian;YANG Xiaoliang;WU Neng;ZHANG Xinli(The 34th Research Instiute of CETC,Guilin Guangxi 541004,China)

机构地区：[1]中国电子科技集团公司第三十四研究所,广西桂林541004

出　　处：《光通信技术》2020年第6期29-31,共3页Optical Communication Technology

摘　　要：为了提高光纤前端系统输出能量的稳定性,设计了一种闭环反馈功率自动控制的光纤放大器,将放大器分束输出的一路光脉冲信号作为反馈信号,经光/电转换及高速峰值保持电路采样后,采用比例-积分-微分(PID)算法实现了对放大器泵浦电流的自动精确控制。实验结果表明:在注入光脉冲能量波动较大的情况下,该光纤放大器输出能量2h稳定性P-V值小于8%,均方根(RMS)值小于1%,输出能量稳定性得到了有效提升。In order to improve the output energy stability of fiber front-end system,an power automatic control optical fiber amplifier is designed with closed-loop feedback.The amplifier output signal splitting beem is used as a feedback signal.After photoelecrtic conversion and sampling by the high-speed peak hold circuit,the proportional integral differential(PID)algorithm is used to achieve an accurate control of the amplifier pump current.The experimental results show that under the condition that the energy of the injected large light pulse fluctuates,the P-V value of the fiber amplifier output energy is less than 8%and the root mean square(RMS)value is less than 1%in two hours.The stability of the output energy has been effectively improved.

关 键 词：光纤放大器 闭环反馈 峰值保持 比例-积分-微分算法 稳定性 

分 类 号：TN248[电子电信—物理电子学]