30 January 2012 Side-polished fiber Bragg grating hydrogen sensor with different sensitive thin films
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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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Minghong Yang, Minghong Yang, Jixiang Dai, Jixiang Dai, Kun Cao, Kun Cao, Junsheng Liao, Junsheng Liao, Pengcheng Zhang, 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); doi: 10.1117/12.914029; https://doi.org/10.1117/12.914029
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