Optically Heated Long-Period Grating as Temperature-Insensitive Fiber-Optic Refractive-Index Sensor

被引：16

作者：

Zhang, Yebin ^{[1
]}

Gao, Shaorui ^{[1
]}

Zhang, A. Ping ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Photon Res Ctr, Kowloon, Hong Kong, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2012年 / 4卷 / 06期

关键词：

Optical heating; long-period grating (LPG); fiber-optic sensor; refractive-index sensor;

D O I：

10.1109/JPHOT.2012.2232907

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 temperature-insensitive fiber-optic refractive-index sensor based on optically heated long-period grating (LPG) is presented. The LPG is manufactured in a short section of cobalt-doped optical fiber (COF), which can be thermally stabilized through a pump light. Two fiber Bragg gratings (FBGs) are manufactured in COF and single-mode fiber (SMF), respectively, to monitor the local sensor and surrounding medium temperature. Experimental results demonstrate that this fiber-grating-based miniature refractive-index sensor can efficiently eliminate temperature cross-sensitivity in the temperature range of 5 similar to 60 degrees C.

引用

页码：2340 / 2345

页数：6

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