一种空间光输入90°混频器  

A Spatial Light Optical Input 90° Mixer

作　　者：张晨祥 陈超[1] 刘子晨[1,2] 尤全[1,2] 谢德权[1,2] 杨奇[1,2] 

机构地区：[1]武汉邮电科学研究院,武汉430074 [2]光纤通信技术和网络国家重点实验室,武汉430074

出　　处：《光通信研究》2016年第1期45-47,66,共4页Study on Optical Communications

基　　金：武汉市科学技术计划资助项目(2014010202010080)

摘　　要：针对激光通信系统对光混频器的特殊需求,设计并完成了一种信号光采用空间光输入、本振光采用保偏光纤输入的90°混频器。该器件信号端输入的空间光的束腰直径为10mm,信号光插入损耗小于3.1dB,本振光插入损耗小于2.5dB,在指定工作波长处I路和Q路的相位差满足90°±5°。实验结果表明,该器件能够满足激光通信对于混频器的性能需求。In view of the special requirements of laser communication systems for optical mixers,this paper designs and com-pletes a 90°mixer,with the signal light by spatial light input and the Local Oscillating(LO)light by polarization maintaining fiber input.The beam waist diameter of the spatial light introduced from the signal end of the device is 10 mm,the insertion loss of the signal light is less than 3.1 dB and that of the LO less than 2.5 dB.At the specified operating wavelength,the phase difference between branch I and branch Q satisfies 90°±5°.The experimental results show that this device meets the re-quirements of laser communication for mixer performances.

关 键 词：90°混频器 空间光 插入损耗 相位差 

分 类 号：TN256[电子电信—物理电子学]