相干激光通信光学系统偏振像差研究  

Polarization Aberration Analysis of Coherent Laser Communication System

作　　者：杨宇飞[1,2] 颜昌翔[1] 胡春晖[1] 吴从均[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所空间三部,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《光学学报》2016年第11期40-47,共8页Acta Optica Sinica

基　　金：国家863计划(2011AA12A103)

摘　　要：相干激光通信系统中,光学系统的偏振像差会改变信号光的偏振态,降低信号光与本振光的混频效率。为了定量分析和研究光学系统的偏振特性,提出了三维偏振光线追迹算法。针对大口径相干激光通信检测平台系统,利用该算法对平台的通信系统进行偏振光线追迹,并根据追迹计算所得的偏振变换矩阵,分析了偏振像差对圆偏振信号光偏振态的影响。通过搭建实验平台,验证了平台通信系统的偏振特性。In the coherent laser communication systems,the instrumental polarization aberration of the optical system can change the polarization state of the received signals and reduce the heterodyne efficiency between the local oscillator beams and received signals.In order to quantitatively analyze the polarization properties of the optical system,the three-dimensional polarization ray-tracing algorithm is proposed.Based on a large aperture coherent laser communication testing platform system,the polarization ray tracings of the communication channel are performed by means of this algorithm,and the influences of the polarization aberration on the polarization state of the circular polarization signal are discussed according to the calculated polarization transformation matrices.The polarization characteristics of the communication system of the testing platform are verified through the experimental platform.

关 键 词：光通信 相干通信 偏振像差 三维偏振光线追迹 保偏 

分 类 号：TN929.13[电子电信—通信与信息系统]