High Strain Sensitivity Temperature Sensor Based on a Secondary Modulated Tapered Long Period Fiber Grating

被引：32

作者：

Jin, Xiren ^{[1
]}

Sun, Cuiting ^{[1
]}

Duan, Shujie ^{[1
]}

Liu, Weiliang ^{[1
]}

Li, Guoan ^{[1
]}

Zhang, Shuo ^{[1
]}

Chen, Xudong ^{[1
]}

Zhao, Lei ^{[2
]}

Lu, Chunlian ^{[1
]}

Yang, Xinghua ^{[1
]}

Geng, Tao ^{[1
]}

Sun, Weimin ^{[1
]}

Yuan, Libo ^{[3
]}

机构：

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

[2] FACRI, Aviat Key Lab Sci & Technol Inertial Technol, Xian 710065, Shaanxi, Peoples R China

[3] Guilin Univ Elect Technol, Photon Res Ctr, Guilin 541004, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Taper; CO2; Laser; strain; temperature; simultaneous measurement; MACH-ZEHNDER INTERFEROMETER;

D O I：

10.1109/JPHOT.2019.2891245

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 novel sensor structure has been proposed and experimentally investigated for simultaneous strain and temperature measurement. The structure is fabricated by weak power modulation of CO2 laser exposure on tapered long period fiber grating (LPFG). Compared with the transmission spectrum of the tapered LPFG, two peaks appear in the transmission spectrum of the novel structure. These resonance peaks exhibit different sensitivity responses; thus, simultaneous measurement of strain and temperature is realized by monitoring the wavelength shift of the two peaks. Experiment results indicate that strain sensitivities of the two peaks are 1.82 pm/mu epsilon and 8.17 pm/mu epsilon and temperature sensitivities are 47.9 pm/degrees C and 65 pm/degrees C, respectively.

引用

页数：8

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