在线式双级光隔离器的隔离度分析  

Isolation Analysis of In-line Dual Stage Optical Isolator

作　　者：万助军[1] 曹明翠[1] 季杭峰[1] 屈红昌 

机构地区：[1]华中科技大学激光技术与工程研究院,湖北武汉430074 [2]康顺光通讯有限公司,福建福州350014

出　　处：《中国激光》2002年第11期995-999,共5页Chinese Journal of Lasers

摘　　要：采用等效琼斯矩阵方法,分析了制约在线式双级光隔离器隔离度的各种因素,提出了对两级采用不同角度的楔角片来制作双级隔离器的方案,并实现批量生产。根据理论分析,隔离度可以达到58dB以上;量产结果表明,80％的产品隔离度达到58dB以上,而平均隔离度为61dB。The factors that restrict the isolation of an in-line dual stage optical isolator are analyzed using equivalent Jonse matrix. A new project for dual stage optical isolator is reported, which uses wedges of different angle for each stage. According to theoretical analysis, the isolation will be more than 58 dB. The result of volume production shows that the isolation of 80% products is more than 58 dB and the average isolation is 61 dB. So, this project can increase the isolation of a dual stage optical isolator largely.

关 键 词：光隔离器 法拉第旋光晶体 楔角片 隔离度 消光比 光纤通信 等效琼斯矩阵 

分 类 号：TN929.11[电子电信—通信与信息系统]