期刊
OPTICS EXPRESS
卷 19, 期 7, 页码 6141-6148出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.006141
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资金
- National Science Foundation of China, NSFC [60908020]
- Key Laboratory for Surface Physics and Chemises [SPC 201005]
WO3-Pd composite films were deposited on the side-face of side-polished fiber Bragg grating as sensing elements by magnetron sputtering process. XRD result indicates that the WO3-Pd composite films are mainly amorphous. Compared to standard FBG coated with same hydrogen sensitive film, side-polished FBG significantly increase the sensor's sensitivity. When hydrogen concentrations are 4% and 8% in volume percentage, maximum wavelength shifts of side-polished FBG are 25 and 55 pm respectively. The experimental results show the sensor's hydrogen response is reversible, and side-polished FBG hydrogen sensor has great potential in hydrogen's measurement. (C) 2011 Optical Society of America
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