High-Sensitivity Strain and Temperature Simultaneous Measurement Sensor Based on Multimode Fiber Chirped Long-Period Grating

被引：29

作者：

Zhang, Shuo ^{[1
]}

Geng, Tao ^{[1
]}

Wang, Shengjia ^{[1
]}

Niu, Huiwen ^{[1
]}

Li, Xiang ^{[1
]}

Deng, Sifan ^{[1
]}

Wang, Zemin ^{[1
]}

Sun, Cuiting ^{[1
]}

Ma, Yiwei ^{[1
]}

Yang, Wenlei ^{[1
]}

Sun, Weimin ^{[1
]}

Yuan, Libo ^{[2
]}

机构：

[1] Harbin Engn Univ, Minist Educ China, Key Lab Infiber Integrated Opt, Harbin 150001, Peoples R China

[2] Guilin Univ Elect Technol, Guilin 541004, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2020年 / 20卷 / 24期

基金：

中国国家自然科学基金;

关键词：

Temperature measurement; Optical fiber sensors; Strain; Temperature sensors; Optical fibers; Chirp; Long-period grating; fiber optics sensor; multimode optical fiber; strain and temperature sensor; OPTICAL-FIBER;

D O I：

10.1109/JSEN.2020.3010071

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 multimode fiber chirped long-period grating (MC-LPG) is proposed and studied as a sensor for simultaneous measurement of strain and temperature. This sensor consists of linear chirped multimode fiber and fixed-length single-mode fiber. The numerical analyses of the transmission spectrum and coupling mode are carried out to obtain appropriate period arrangement. The experimental results are in good agreement with the theoretical results. The chirped period arrangement induces a transmission spectrum with double peaks. Therefore, the simultaneous measurement of strain and temperature is realized by observing the wavelength shift of the two peaks. In addition, the high sensitivity of two resonance peaks provides a good resolution for the sensor.

引用

页码：14843 / 14849

页数：7

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