Side-polished fiber Bragg grating hydrogen sensor with different sensitive thin films

Minghong Yang; Jixiang Dai; Kun Cao; Junsheng Liao; Pengcheng Zhang

doi:10.1117/12.914029

30 January 2012 Side-polished fiber Bragg grating hydrogen sensor with different sensitive thin films

Minghong Yang, Jixiang Dai, Kun Cao, Junsheng Liao, Pengcheng Zhang

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83511A (2012) https://doi.org/10.1117/12.914029
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

WO₃-Pd and Pd-Ag composite films were deposited on the side-face of side-polished fiber Bragg grating as sensing element by magnetron sputtering process. Compared to common FBG coated with same hydrogen sensitive film, side-polished FBG significantly increase the sensor's sensitivity. When the hydrogen concentration is 4% and 8% in volume percentage, the maximum wavelength shift of side-polished FBG is about 25 and 55 pm respectively. The experiment results show the sensor's hydrogen response is reversible, side-polished FBG hydrogen sensor has great potential in hydrogen's measurement.

Citation Download Citation

Minghong Yang, Jixiang Dai, Kun Cao, Junsheng Liao, and Pengcheng Zhang "Side-polished fiber Bragg grating hydrogen sensor with different sensitive thin films", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511A (30 January 2012); https://doi.org/10.1117/12.914029

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