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Proceedings Paper

Fabry-Perot type composite fiber interferometer for gaseous hydrogen leakage detection
Author(s): Kwan Seob Park; Hae Young Choi; Kyung Ho Kwack; Min-Su Park; Jae-Hyeong Jang; Byeong Ha Lee
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Paper Abstract

We propose a simple but compact hydrogen sensor based on Fabry-Perot (FP) type all fiber interferometer. The proposed sensor consists of two cascaded FP cavities formed with hollow core fiber (HOF) cavity, which is mainly used to compensate the influence of the unstable source power, and multi mode fiber (MMF) cavity coated with palladium as a sensing part. The experiment result shows that the exposed 4% hydrogen gas can be detected by the variation of interference fringe contrast with respect to optical property change of the palladium.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75034J (5 October 2009); doi: 10.1117/12.835407
Show Author Affiliations
Kwan Seob Park, Gwangju Institute of Science and Technology (Korea, Republic of)
Hae Young Choi, Gwangju Institute of Science and Technology (Korea, Republic of)
Kyung Ho Kwack, Korea Photonics Technology Institute (Korea, Republic of)
Min-Su Park, Gwangju Institute of Science and Technology (Korea, Republic of)
Jae-Hyeong Jang, Gwangju Institute of Science and Technology (Korea, Republic of)
Byeong Ha Lee, Gwangju Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors

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