The system error of splice loss by OTDR<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> 黄少山 Huang Shaoshan 工程师 Engineer 中国电信集团公司网络建设运行部工程一处 Project Management No.1Division,Network Construction and Operation Department,China Telecommunications Sorporation Abstract:On the basis of brief instruction of the working principle of OTDR, we find there is a system error when we test the splice loss by OTDR,and we also give the system error figure according to experimental data. OTDR,即光时域反射仪,是目前在光通信工程中使用最多的仪表。它既可以测量光纤长度,光纤损耗河接头损耗,还可以用来查找光缆故障,加之它直观、快速和较为精确的特点,因此,不论光缆工程施工单位,还是光缆维护单位,均广泛配备了OTDR。事实上,在工程验收中接收损耗也是OTDR的双向测量值的平均数为准,因此,本文主要讨论应用OTDR测量接头损耗的系统误差。 |