基于压电陶瓷振镜的单模光纤闭环补偿系统设计  

Design of Single-mode Fiber Closed-loop Compensation System Based on Piezoelectric Ceramic Galvanometer

作　　者：范新坤 刘炳岚 王晶 FAN Xinkun;LIU Binglan;WANG Jing(Academy of Opto-Electronics,China Electronics Technology Group Corporation(AOE CETC),Tianjin,China;Tianjin,China;Beijing Oriental Sharp Laser Technology Co.,Ltd.,Beijing,China)

机构地区：[1]中国电子科技集团公司光电研究院,天津 [2]天津 [3]北京东方锐镭科技有限公司,北京

出　　处：《光电技术应用》2024年第5期20-24,共5页Electro-Optic Technology Application

摘　　要：在激光通信过程中,由于卫星平台的振动、机械转台的噪声等会使入射光轴与接收光轴之间存在随机角抖动,影响通信系统的性能。研究了随机角抖动对空间光到单模光纤耦合效率的影响,提出基于CCD相机和快速倾斜镜的闭环补偿系统。在实验室内搭建实验平台,测试了不同抖动幅度对单模光纤耦合效率的影响,验证了补偿系统对提高耦合效率的可行性。实验结果表明,闭环补偿系统最大可提高耦合效率为24%;在同样的抖动频率下,抖动幅度增加时,其补偿效果更明显;补偿系统对于低频抖动的补偿效果比高频更加明显。这些研究内容为解决随机角抖动对单模光纤耦合效率的影响提供了数据参考与技术支持。In the process of laser communication,due to the vibration of the satellite platform,the noise of the mechanical turntable,etc.,there will be random angular jitter between the incident optical axis and the receiving optical axis,which affects the performance of the communication system.The effect of random angular jitter on the coupling efficiency of spatial light to single-mode fiber is studied.A closed-loop compensation system based on charge coupled device(CCD)camera and fast tilting mirror is proposed.The experimental platform is built in the laboratory to test the influence of different jitter amplitudes on the coupling efficiency of single-mode fiber,and the feasibility of the compensation system to improve the coupling efficiency is verified.Experimental results show that the closed-loop compensation system can increase the coupling efficiency by 24%.At the same jitter frequency,the compensation effect is more obvious when the jitter amplitude increases.The compensation system compensates for low-frequency jitter more effectively than the high-frequency.These studies provide data reference and technical support for solving the effect of random angular jitter on the coupling efficiency of single-mode fibers.

关 键 词：空间激光通信 随机角抖动 单模光纤耦合 闭环补偿 

分 类 号：TN929.1[电子电信—通信与信息系统]