N×40 Gbit/s波分系统在线带内信噪比测试方法研究与验证  

Analysis and Verification of the Measurement Approaches of in Band OSNR Online in N×40 Gbit/s DWDM Networks

作　　者：陈宏标[1] 沈步阳[1] 孙学瑞[2] 

机构地区：[1]中国电信股份有限公司广东研究院,广州510630 [2]EXFO公司北京代表处,北京100044

出　　处：《电信科学》2010年第4期59-65,共7页Telecommunications Science

摘　　要：在40Gbit/s和ROADM波分系统中,传统的信噪比测试方法已不适用,需要进行带内信噪比测试。积分法虽然可以测试带内信噪比,但由于需要反复打开和关闭信号光,并且每次只能测试一个通道,不适于系统测试。目前的偏振法具有多种类型,本文重点讨论了混合偏振差分光谱分析法的原理,并且进行了实际的验证测试。In 40G OSNR and ROADM DWDM networks, traditional OSNR measurement approaches cannot be used, but in band t approaches have been needed. Though integration approach can be used to in band OSNR test, this approach still cannot be used in network test because of needing to turn on and off signal and only testing one channel once Here we analyze differential spectral response method and have done some practical verification testing.

关 键 词：40Gbit/s 波分系统 带内信噪比 偏振法 在线测试 

分 类 号：TN929.11[电子电信—通信与信息系统]