偏振分光光学天线前向散射杂光仿真测试与抑制  

Simulation Test and Inhibit Method of Forward Scattered Stray Light of Polarized Beam Split Optical Antenna

作　　者：吕娟[1] 马小龙[1] 贺应红[1] 闫兴涛[1] 解培月[1] 于基睿 赵意意[1] 

机构地区：[1]中国科学院西安光学精密机械研究所月球与深空探测室,西安710126

出　　处：《光子学报》2016年第4期65-70,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.U1231204)资助~~

摘　　要：利用口径150mm、视场±0.17°、接收波长974nm的光学天线望远系统原理样机,搭建了试验装置并进行了实测,测量结果显示光学天线在0.35°附近及1°附近出现了两个原路回波杂光峰值.通过对两个杂光峰值的仿真分析,提出了在主镜内部增加二次斜光阑及临时挡光环的措施,消除望远系统前向散射杂光.通过分析主次镜焦距分配对光学天线望远系统杂光的影响,指出在设计中缩小主镜焦距可降低系统原路回波杂光,这对光学天线消回波杂光设计具有指导意义.An experimental installation using aproto of optical antenna telescope with diameter 150 mm,field of view ±0.17°and receive wavelength 974 nm has been built to measure the forward scattering,and the result shows that there are two energy peaks of original-road-returned stray light at 0.35°and 1°.By analysis of these two stray light peaks,a measure to eliminate forward scattered stray light of telescopic system is put forward.By analysis of the influence of primary and secondary lens focal power distribution on stray light of optical antenna,concluded that reduce the focal length of primary mirror can reduce the original-road-returned stray light.

关 键 词：相干光通信 偏振分光 前向散射 杂散光 试验测试 仿真分析 焦距分配 

分 类 号：TN929.13[电子电信—通信与信息系统]