High spatial resolution distributed optical fiber dynamic strain sensor with enhanced frequency and strain resolution

被引：104
|
作者：
Masoudi, Ali [1 ]
Newson, Trevor P. [1 ]
机构：
[1] Univ Southampton, ORC, Southampton SO17 1BJ, Hants, England
来源：
OPTICS LETTERS | 2017年 / 42卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
TEMPERATURE;
D O I：
10.1364/OL.42.000290
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A distributed optical fiber dynamic strain sensor with high spatial and frequency resolution is demonstrated. The sensor, which uses the phi-OTDR interrogation technique, exhibited a higher sensitivity thanks to an improved optical arrangement and a new signal processing procedure. The proposed sensing system is capable of fully quantifying multiple dynamic perturbations along a 5 km long sensing fiber with a frequency and spatial resolution of 5 Hz and 50 cm, respectively. The strain resolution of the sensor was measured to be 40 n epsilon.
引用
收藏
页码：290 / 293
页数：4
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