基于相干激光通信的空间光混频器光机结构设计  

Opto-Mechanical Structure Design of the Space Optical Hybrid Based on Space Coherent Laser Communication

作　　者：郑阳[1] 姜会林[2] 佟首峰[2] 郑建平[1] 贺文俊[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]长春理工大学空地激光通信技术国防重点学科实验室,吉林长春130022

出　　处：《光学学报》2013年第9期59-64,共6页Acta Optica Sinica

基　　金：国家863计划(2011AA701111)

摘　　要：设计了一种应用于星间相干激光通信系统的新型空间光混频器。基于传统的空间光混频器光学原理方案,加入一块相位补偿晶体,去掉了两片1/2波片,将两块偏振分光棱镜旋转一定角度,能消除1/2波片由于加工误差对相位延迟造成的影响。研究了相位补偿晶体旋转角度与相对相位差补偿量的关系,对相位补偿量的仿真曲线进行了分析。提出了一种空间光混频器相位检测方法,利用该检测方法搭建实验平台,通过实验数据验证了此方法对于相位补偿晶体的有效性。并针对新型空间光混频器光学结构进行了具体的机械结构设计。该装置可应用于空间相干接收系统。A new style space optical hybrid is designed for intersatellite coherent laser communication. Based on traditional principle scheme of the space optical hybrid, a phase compensation crystal is added. Two 1/2 wave plates are removed. Two polarization splitting prisms are rotated by a certain angle so as to remove the effect of phase delay due to processing errors of the 1/2 wave plates. The mathematical relationship between phase compensation crystal rotation angle and relative phase difference compensation amount is researched. A phase detection method of the space optical hybrid is proposed. The detection method is used to build experiment and the validity of the phase compensated crystal is proved by experimental data. Mechanical structure of the new style space optical hybrid is designed. The device can be applied to the space coherent receiving system.

关 键 词：光通信 空间光混频器 相干 自由空间 混频效率 

分 类 号：TN929.13[电子电信—通信与信息系统]