On-line temperature measurement using single-ended distributed cascading fiber Bragg gratings-based Brillouin optical fiber sensor

被引：0
|
作者：
Xu, Jin [1 ]
Wang, Rongping [2 ]
Cabani, Adnane [3 ]
Xu, Ping [4 ]
机构：
[1] Univ Quebec, Ecole Technol Super, Montreal, PQ H3C 1K3, Canada
[2] Ningbo Univ, Adv Technol Res Inst, Ningbo 315211, Zhejiang, Peoples R China
[3] Embedded Elect Syst Res Inst, Instrumentat IT & Syst, F-76801 St Etienne Du Rouvray, France
[4] Wuhan Jun Hui Technol Dev Co Ltd, Wuhan 430074, Hubei, Peoples R China
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2019年 / 30卷 / 03期
关键词：
fiber optic sensors; BOTDA; nonlinear optics; temperature distribution; TIME-DOMAIN ANALYZER; SPATIAL-RESOLUTION; COHERENT DETECTION; STRAIN; FREQUENCY; SCATTERING; BOTDA; SBS;
D O I：
10.1088/1361-6501/aafd87
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, we report a novel method of on-line distributed temperature measurement in optical fibers. The method is based on a cascading fiber Bragg gratings (FBGs) single-ended Brillouin optical time-domain analyzer (BOTDA). This proposal applies the cascading FBGs both as a reflector and an optical filter to improve the signal-to-noise ratio of the single- ended BOTDA. Experimental results show that a 75 km sensing range with 3 degrees C temperature resolution and 5 m spatial resolution are achieved.
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页数：6
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