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Proceedings Paper

High finesse interferometric hydrogen sensor based on fiber-optic Fabry-Perot cavity modulations
Author(s): Young Ho Kim; Chanki Lee; Ji Hey Kwon; Yong-Tak Lee; Byeong Ha Lee
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Paper Abstract

Fiber-optic hydrogen sensing technique based on an extrinsic Fabry-Perot interferometer (FPI) composed of a palladium (Pd)-coated high finesse cavity is proposed and experimentally demonstrated. As the Pd layer absorbs hydrogen gas, the FPI cavity length is reduced so that we can measure the wavelength shift of its interference spectrum. The sensing performance of the proposed sensor is presented in terms of spectral response to hydrogen and recovery by nitrogen.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216D (7 November 2012); doi: 10.1117/12.975120
Show Author Affiliations
Young Ho Kim, Gwangju Institute of Science and Technology (Korea, Republic of)
Chanki Lee, Gwangju Institute of Science and Technology (Korea, Republic of)
Ji Hey Kwon, Gwangju Institute of Science and Technology (Korea, Republic of)
Yong-Tak Lee, 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. 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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