影响逆向调制反射光特性的因素分析  

Analysis of influence factors of retro-reflect modulation reflected optical characteristics

作　　者：孙艳荣[1] 柯熙政[2] 李元虎[2] 

机构地区：[1]北华航天工业学院材料工程学院,河北廊坊100065 [2]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《红外与激光工程》2016年第1期210-216,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金(61377080;60977054);陕西省"13115"科技统筹计划(2011KTCQ01-31);陕西省教育厅产业化培育基金(2010JC17);陕西省教育厅科研计划(2013JK1104);西安市科技成果转换基金(CX12165);陕西省自然科学基础研究计划(2013JQ8011);江苏省省级前瞻性研究专项资金(第三批)项目(BE2013088)

摘　　要：为了研究逆向调制器结构参数及接收距离对系统反射光特性的影响,通过建立"猫眼"目标离焦结构等效模型,采用几何光学方法对该模型进行理论分析,推导出表达反射光特性(发散半角、反射光斑半径、反射光功率密度)的相应计算公式并进行数值计算和实测实验。理论分析与实验结果表明:逆向调制器结构参数及接收距离对调制系统反射光斑半径和功率密度的影响明显且呈规律变化,减小透镜焦距、增大透镜口径、增大接收距离可以加快反射功率随离焦量变化速度,有助于改善调制效果。且一般情况下,正离焦的反射光发散半角小于负离焦的反射光发散半角。The infuence of retro-reflect modulation reflected optical characteristics on the retro-reflect modulation structure parameters and receiving distance were studied by establishing off-focus structure equivalent model of retro-reflect modulation, and the theory of retro-reflect modulation model with geometrical optics method was analyzed. Some expressions related to the structure was given, numerical calculation and experiment were completed. Results show that the retro-reflect modulation structure parameters and receiving distance affect the variations of modulation system reflection power boviously and regularly. Moreover, reducing the lens focal length, increasing the lens aperture and increasing the receiving distance can increase the rate of change, and make contribution to improve the modulation effect. And under normal circumstances, the divergence of the reflected beams is much smaller when the mirror in the focal plane moves forward out of focus.

关 键 词：光通信 逆向调制 离焦量 反射功率 

分 类 号：TN929.12[电子电信—通信与信息系统]