基于偏振光时域反射仪（Polarization-OTDR）系统频谱分析的分布式光纤振动传感器。

Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system.

作者信息

Zhang Ziyi, Bao Xiaoyi

机构信息

Physics Department, University of Ottawa, 150 Louis Pasteur, Ottawa, ON, K1N 6N5, Canada.

出版信息

Opt Express. 2008 Jul 7;16(14):10240-7. doi: 10.1364/oe.16.010240.

DOI:10.1364/oe.16.010240

PMID:18607432

Abstract

A fully distributed optical fiber vibration sensor is demonstrated based on spectrum analysis of Polarization-OTDR system. Without performing any data averaging, vibration disturbances up to 5 kHz is successfully demonstrated in a 1km fiber link with 10m spatial resolution. The FFT is performed at each spatial resolution; the relation of the disturbance at each frequency component versus location allows detection of multiple events simultaneously with different and the same frequency components.

摘要

基于偏振光时域反射仪（Polarization-OTDR）系统的频谱分析，展示了一种全分布式光纤振动传感器。在不进行任何数据平均处理的情况下，在一条1公里长、空间分辨率为10米的光纤链路中成功检测到高达5千赫兹的振动干扰。在每个空间分辨率处执行快速傅里叶变换（FFT）；每个频率分量处的干扰与位置的关系允许同时检测具有不同和相同频率分量的多个事件。