用于RFOG的光学锁相环仿真研究  

Simulation of OPLL Used for RFOG

作　　者：王祖谦 周震[1] 王潇[1] 姜辉 傅长松 WANG Zu-qian;ZHOU Zhen;WANG Xiao;JIANG Hui;FU Chang-song(Ministry of Education Key Laboratory of Micro-nano Measurement ＆ Control and Low Dimensional Physics, Beijing University of Aeronautics and Astronautics, Beijing 100191;Shanghai Engineer Research Center of Inertia, Shanghai 200233;Shanghai Institute of Spaceflight Control Technology, Shanghai 201109)

机构地区：[1]北京航空航天大学微纳测控与低维物理教育部重点实验室,北京100191 [2]上海惯性工程技术研究中心,上海200233 [3]上海航天控制技术研究所,上海201109

出　　处：《导航与控制》2018年第1期65-68,48,共5页Navigation and Control

基　　金：上海航天科技创新基金资助项目(编号:SAST2015077)

摘　　要：谐振式光纤陀螺是实现光纤陀螺小型化发展的重要方向,具有广阔的应用背景和很好的应用前景。而激光器作为谐振式光纤陀螺的关键设备之一,其性能直接影响着谐振式光纤陀螺的精度。为了解决谐振式光学陀螺的背反噪声问题,采用光学锁相环技术对激光器频率进行锁定的方案,通过对光学锁相环进行建模、仿真分析,重点研究了锁相原理及锁相方案,验证了基于电流调制的半导体激光器的光学锁相环可行性。最终验证了光学锁相环的相位锁定效果,实现了两激光器输出频率差值稳定的设计目标。Based on the optical Sagnac principle,RFOG has great potentialities of miniaturization,becoming the most competitive gyroscope in future. Laser as the most important optical equipment in RFOG system,it has an significant impact on RFOG＇ s output accuracy. A versatile,inexpensive and simple optical phase lock loop（OPLL） for applications in RFOG experiment is presented. This paper analysed the principle of phase lock and proved it by simulation. Finally,two separate semiconductor lasers＇ phase lock phenomenon is verified,it achieved the goal of keeping solid frequency differences.

关 键 词：谐振式光纤陀螺 激光器 光学锁相环 相位锁定 

分 类 号：TN29[电子电信—物理电子学]