基于MPLC提高卡塞格林天线传输效率的方法  

Method of Improving the Transmission Efficiency of Cassegrain Antenna Based on MPLC

作　　者：阮铖 高世杰[1,2] 马烈 王晞名 于溪畅 张国强 Ruan Cheng;Gao Shijie;Ma Lie;Wang Ximing;Yu Xichang;Zhang Guoqiang(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130031,Jilin,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130031 [2]中国科学院大学,北京100049

出　　处：《激光与光电子学进展》2024年第13期224-231,共8页Laser & Optoelectronics Progress

摘　　要：卡塞格林天线作为重要的光学天线,广泛应用于空间激光通信中,但卡塞格林天线不可避免的次镜遮挡问题严重影响了传输效率。为了消除次镜遮挡所带来的不利影响,提出一种基于多平面光转换(MPLC)技术提高卡塞格林天线传输效率的方法,利用MPLC将通信高斯光转换为与卡塞格林天线遮拦比相匹配的双高斯环形光,使出射光充满卡塞格林天线有效范围的同时避开次镜遮挡。所提方法适用于任意遮拦比的卡塞格林天线,均可以大幅提升传输效率,降低了通信难度,对于远距离传输的空间激光通信研究具有一定意义。Cassegrain antennas,as crucial optical antennas,find widespread application in space laser communication.With the increasing demands of communication,there is a continuous rise in the requirements for antenna transmission efficiency.However,the unavoidable secondary mirror obstruction issue significantly hampers transmission efficiency and complicates communication.In order to address this problem and eliminate the adverse effects of secondary mirror obstruction,this paper proposes a novel method to enhance Cassegrain antenna transmission efficiency based on multiplane light converter(MPLC)technology.MPLC is utilized to transform communication Gaussian beams into hollow Gaussian beams that matches the Cassegrain antenna’s obscuration ratio,ensuring that the outgoing beam fills the effective range of the Cassegrain antenna while avoiding secondary mirror obstruction.This method is applicable to Cassegrain antennas with varying obscuration ratios and can substantially improve transmission efficiency,reducing communication complexity.It holds significance for research in longdistance space laser communication.

关 键 词：卡塞格林天线 激光通信 传输效率 多平面光转换 

分 类 号：TN929.1[电子电信—通信与信息系统]