System and method for measuring fiber temperature using OTDR measurements
    3.
    发明授权
    System and method for measuring fiber temperature using OTDR measurements 有权
    使用OTDR测量测量纤维温度的系统和方法

    公开(公告)号:US09310274B2

    公开(公告)日:2016-04-12

    申请号:US13859839

    申请日:2013-04-10

    摘要: Systems and methods for calculating a relative temperature of a fiber-optic cable using bi-directional analysis traces with an optical time-domain reflectometer (“OTDR”). Analysis of bi-directional traces along a length of fiber-optic cable yields a scaled local backscatter coefficient of the fiber. Accordingly, an initial set of measurement data is collected at a first time interval and a base scaled local backscatter along a fiber is calculated. A subsequent set of measurement data is collected at a second time interval and a subsequent scaled local backscatter along the fiber is calculated. The exemplary systems and methods described herein determines a change in scaled local backscatter as a function of a difference between the base scaled local backscatter and at least the subsequent scaled local scaled local backscatter along the fiber, and then determines a relative temperature variation of the fiber as a function of the change in scaled local backscatter.

    摘要翻译: 使用光时域反射计(“OTDR”)的双向分析迹线计算光纤电缆的相对温度的系统和方法。 沿着光纤电缆的长度的双向迹线的分析产生了光纤的缩放的局部反向散射系数。 因此,在第一时间间隔收集初始的测量数据集,并且计算沿着光纤的基本缩放的局部反向散射。 在第二时间间隔收集随后的一组测量数据,并且计算沿着光纤的随后缩放的局部反向散射。 本文描述的示例性系统和方法根据基本缩放的局部反向散射与至少沿着光纤的随后缩放的局部缩放的局部反向散射之间的差异的函数确定缩放的局部反向散射的变化,然后确定光纤的相对温度变化 作为缩放局部反向散射变化的函数。