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Proceedings Paper

Optic fiber hydrogen sensor based on high-low reflectivity Bragg gratings and WO3-Pd-Pt multilayer films
Author(s): Jixiang Dai; Minghong Yang; Zhi Li; Gaopeng Wang; Chujia Huang; Chongjie Qi; Yutang Dai; Xiaoyan Wen; Cheng Cheng; Huiyong Guo
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Paper Abstract

A novel optic fiber hydrogen sensor is proposed in this paper. Two Bragg gratings with different reflectivity were written in single mode fiber with phase mask method by 248 nm excimer laser. The end-face of singe mode fiber was deposited with WO3-Pd-Pt multilayer films as sensing element. The peak intensity of low reflectivity FBG is employed for hydrogen characterization, while that of high reflectivity FBG is used as reference. The experimental results show the hydrogen sensor still has good repeatability when the optic intensity in the fiber is only 1/3 of its initial value. The hydrogen sensor has great potential in measurement of hydrogen concentration.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96346J (28 September 2015); doi: 10.1117/12.2194098
Show Author Affiliations
Jixiang Dai, Wuhan Univ. of Technology (China)
Minghong Yang, Wuhan Univ. of Technology (China)
Zhi Li, Wuhan Univ. of Technology (China)
Gaopeng Wang, Wuhan Univ. of Technology (China)
Chujia Huang, Wuhan Univ. of Technology (China)
Chongjie Qi, Wuhan Univ. of Technology (China)
Yutang Dai, Wuhan Univ. of Technology (China)
Xiaoyan Wen, Wuhan Univ. of Technology (China)
Cheng Cheng, Wuhan Univ. of Technology (China)
Huiyong Guo, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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