High resolution temperature sensor based on frequency beating between twin DFB fiber lasers

被引：13

作者：

Dusablon, Laurent ^{[1
]}

Fortin, Vincent ^{[1
]}

Boilard, Tommy ^{[1
]}

Bernier, Martin ^{[1
]}

Galarneau, Pierre ^{[2
]}

Babin, Francois ^{[2
]}

Vallee, Real ^{[1
]}

机构：

[1] Univ Laval, Ctr Opt Photon & Laser COPL, Quebec City, PQ G1V 0A6, Canada

[2] INO, 2740 Einstein St, Quebec City, PQ G1P 4S4, Canada

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 18期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

STRAIN; INTERFEROMETER;

D O I：

10.1364/OE.395949

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a high resolution temperature sensor using the beat frequency between the longitudinal modes of twin single-mode distributed feedback fiber lasers. The lasers are made by femtosecond inscription of pi-shifted fiber Bragg gratings in a thulium-doped fiber. Combining the light from two single frequency fiber lasers on a photodetector produces a rf beat frequency signal which is dependent on temperature. Experimental results show a sensitivity of 1900 MHz/degrees C, leading to a precision of 0.0007 degrees C. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：26067 / 26075

页数：9

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