Random fiber laser based on a partial-reflection random fiber grating for high temperature sensing

被引：29

作者：

Deng, Jiancheng ^{[1
,2
]}

Churkin, D., V ^{[3
]}

Xu, Zuowei ^{[1
,2
]}

Shu, Xuewen ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelectron, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

OPTICS LETTERS | 2021年 / 46卷 / 05期

基金：

中国国家自然科学基金; 俄罗斯科学基金会; 欧盟地平线“2020”;

关键词：

19;

D O I：

10.1364/OL.419115

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A stable single wavelength random fiber laser (RFL) with a partial-reflection random fiber grating (PR-RFG) for high temperature sensing is proposed and demonstrated for the first time, to the best of our knowledge. The PR-RFG is fabricated with the help of a femtosecond laser, with its highest reflection peak significantly higher than all other reflection peaks, which can ensure the stability of this filter-free RFL. Theoretical calculations also show that such a PR-RFG should be designed with reflectivity in the range of similar to 30%-90% to obtain one reflection peak significantly higher than other peaks. The threshold of this laser is only 6.4 mW. In addition, the RFL realizes temperature sensing in the range from 25 degrees C to 500 degrees C and has an optical signal-to-noise ratio of up to 70 dB. (C) 2021 Optical Society of America

引用

页码：957 / 960

页数：4

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