OTDR测试盲区的研究与应用  

Research on the deadzone of OTDR and the practical techniques for decreasing the deadzone

作　　者：李立功[1] 余晓芬[1] 

机构地区：[1]合肥工业大学仪器仪表学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2004年第10期1330-1333,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：文章介绍了光时域反射计(OTDR)测试盲区的指标定义和产生机理,提出了利用窄脉冲、宽带宽、程控滤波和衰减等技术减小测试盲区的解决办法。结果表明,运用这些方法和高速采样技术对现有产品改进后,实现了3m的测试事件盲区,满足了光纤器件和光纤局域网的小盲区测试。The definition and mechanism of the measuring deadzone by using the optical time-domain reflectometer(OTDR)are introduced,and several methods of decreasing the deadzone are discussed including the technique of narrow pulse width,the wide bandwidth receiving technique,and the high-speed sampling technology. These methods are used to improve the present products,and the experiment result shows that the event deadzone is about 3 m,then the measuring need of small deadzone in the optical fiber LAN and optical fiber devices can be satisfied.

关 键 词：光时域反射计 事件盲区 窄脉冲 

分 类 号：TH741.4[机械工程—光学工程]