A Cascade Fiber Optic Sensors for Simultaneous Measurement of Strain and Temperature

被引：8

作者：

He, Xue Lan ^{[1
]}

Wang, Dong Hui ^{[1
]}

Bin Wang, Xian ^{[1
]}

Xia, Qi ^{[1
]}

Li, Wen Chao ^{[1
]}

Liu, Yin ^{[1
]}

Wang, Zhen Qiang ^{[2
]}

Yuan, Li Bo ^{[3
]}

机构：

[1] Harbin Engn Univ, Photon Res Ctr, Coll Sci, Key Lab Infiber Integrated Opt, Harbin 150001, Peoples R China

[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China

[3] Guilin Univ Elect Technol, Sch Elect Engn & Automat, Photon Res Ctr, Guilin 541004, Peoples R China

来源：

IEEE SENSORS LETTERS | 2019年 / 3卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Electromagnetic wave sensors; fiber Bragg grating; remote sensing; sagnac interferometer; simultaneous temperature and strain measurement;

D O I：

10.1109/LSENS.2019.2949048

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simple and compact cascade fiber optic sensor for simultaneous measurement of temperature and strain is proposed and demonstrated in this letter. The structure consists of a short section of a PANDA fiber and a cascaded fiber Bragg grating (FBG). A Sagnac interferometer was formed in the PANDA fiber by tip coating the gold film. The sensitivities of the PANDA fiber and FBG for the temperature and strain are different, which makes the sensor to have the ability to measure strain and temperature simultaneously. Experimental results show that the maximum errors for the temperature and strain measurements are 0.22 degrees C and 21.7 mu epsilon, respectively. Based on its simple fabrication process and compact size, the sensor described in this letter could be a competitive candidate in remote sensing for the simultaneous measurement of temperature and strain.

引用

页数：4

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