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Proceedings Paper

Comparison of side-polished fiber Bragg grating hydrogen sensors sputtered with Pd/Ag and Pd/Y composite films
Author(s): Jixiang Dai; Minghong Yang; Zhi Yang; Xun Yu; Kun Cao; Junsheng Liao; Pengcheng Zhang
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Paper Abstract

Pd/Ag and Pd/Y composite films were deposited on the side-face of side-polished fiber Bragg grating (FBG) as sensing elements with magnetron sputtering process. Compared to standard FBG coated with same hydrogen sensitive film, side-polished FBG significantly increase the sensor's sensitivity. When hydrogen concentration is 4% in volume percentage, the wavelength shifts of side-polished FBG sputtered with Pd/Ag and Pd/Y are 18 and 23 pm respectively. The experimental results show the hydrogen sensor coated with Pd/Y composite film has higher sensitivity and quicker response rate, and the sensor's hydrogen response is reversible. The side-polished FBG hydrogen sensor with Pd-based composite films has great potential in measurement and monitor of hydrogen concentration.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842162 (7 November 2012); doi: 10.1117/12.970177
Show Author Affiliations
Jixiang Dai, Wuhan Univ. of Technology (China)
Minghong Yang, Wuhan Univ. of Technology (China)
Zhi Yang, Wuhan Univ. of Technology (China)
Xun Yu, Huazhong Univ. of Science and Technology (China)
Kun Cao, Science and Technology on Surface Physics and Chemistry Lab. (China)
Junsheng Liao, Science and Technology on Surface Physics and Chemistry Lab. (China)
Pengcheng Zhang, Science and Technology on Surface Physics and Chemistry Lab. (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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