基于空间光通信的光束偏转技术研究现状及趋势分析  

Research status and trend analysis of beam deflection technology based on space laser communication

作　　者：李富豪 赵继广 杜小平 张建伟 段永胜 陈攀 Li Fuhao;Zhao Jiguang;Du Xiaoping;Zhang Jianwei;Duan Yongsheng;Chen Pan(Department of Electronic and Optical Engineering,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学电子与光学工程系,北京101416

出　　处：《红外与激光工程》2023年第10期291-313,共23页Infrared and Laser Engineering

摘　　要：光束偏转技术是自由空间激光通信的关键组成部分,其性能决定了自由空间激光通信能否满足快速、稳定的通信需求。系统总结了机械式和非机械式六类光束偏转技术的国内外研究进展,根据不同技术的偏转特性,从关键指标方面比较分析了各类光束偏转技术的特点,并从空间应用性能需求的角度给出了发展趋势,展望了电光偏转技术在空间光通信领域具有很好的应用前景,为下一步的研究工作指明了方向。Significance Space laser communication has the advantages of large capacity,high bandwidth,strong confidentiality and great anti-electromagnetic interference ability.It is widely used in the field of space communication.Laser communication is one of the important ways to realize large capacity secure communication between space and earth,starry sky,interspace,air and sea,air and air links.It has become a research hotspot for realizing space communication links at present.The fast and stable space laser communication needs to be based on high performance ATP(Acquisition,Tracking and Pointing)technology.In order to achieve the purpose of optical signal acquisition,the working direction of the transmitter and receiver needs to be changed.However,due to orbit and energy constraints,space targets and spacecraft cannot change their attitude and position at will.The application of beam deflection technology can solve this problem well.Progress In the study,the research progress of 6 types of beam deflection technologies,mechanical and nonmechanical,is systematically summarized.According to the deflection characteristics of different technologies,the characteristics of each type of beam deflection technology are compared and analyzed from the aspect of key performance index.Table 1 is used to visually compare and analyze the key index that affect the deflection performance.In addition,the research progress of electro-optical deflection technology in recent years is analyzed.KTN(Potassium Tantalate Niobate)electro-optical crystal has good quadratic electro-optic effects and can achieve better deflection performance compared with other deflection technologies.By following up the progress of major research institutions at home and abroad,such as,NTT(Nippon Telegraph and Telephone)in Japan,University of Pennsylvania in the United States,Shandong Academy of Sciences,Harbin Institute of Technology,Nankai University,etc.,sorted out their own research context of the main line,summed up and analyzed the problems to be solved.Then

关 键 词：光束偏转技术 电光偏转 KTN晶体 空间光通信 

分 类 号：TH74[机械工程—光学工程]