光时域反射仪(OTDR)盲区分析及规避措施  

Deadzone Analysis and Avoidance Measures of OTDR

作　　者：刘乘龙 肖卫东 李静 郑波[1] Liu Chenglong;Xiao WeiDong;Li Jing;Zheng Bo(China Information Technology Designing&Consulting Institute Co.,Ltd.Zheng.zhou Branch,Zhengzhou 450007,China;National Defence University of People's Liberation Army,Beijing 100858,China;The People's Posts and Telecommunications Press,Beijing 100164,China)

机构地区：[1]中讯邮电咨询设计院有限公司郑州分公司,河南郑州450007 [2]国防大学联合勤务学院,北京100858 [3]人民邮电出版社,北京100164

出　　处：《邮电设计技术》2018年第8期69-71,共3页Designing Techniques of Posts and Telecommunications

摘　　要：阐述了OTDR盲区的定义和形成机理,分析了OTDR盲区对光纤链路损耗测试的影响。提出了引入发射光纤作为盲区消除器的测试结构,研究了发射光纤长度与光脉冲宽度的匹配关系。给出了常用脉冲宽度所对应的发射光纤的长度,并在实际测量中进行了验证。It presents the definition and formation mechanism of the deadzone of OTDR,and analyzes the affect of the deadzone of OTDR on fiber link attenuation measurement.The test structure which contains launching fiber as deadzone eliminator is proposed.The matching relationship between the length of deadzone eliminator and optical pulse width is provided.The length of the transmitting fiber corresponding to the common pulse width is given,which is verified in practical measurement.

关 键 词：光时域反射仪 盲区 雪崩光电二极管 光脉冲宽度 盲区消除器 

分 类 号：TN929.11[电子电信—通信与信息系统]