High finesse interferometric hydrogen sensor based on fiber-optic Fabry-Perot cavity modulations

Young Ho Kim; Chanki Lee; Ji Hey Kwon; Yong-Tak Lee; Byeong Ha Lee

doi:10.1117/12.975120

7 November 2012 High finesse interferometric hydrogen sensor based on fiber-optic Fabry-Perot cavity modulations

Young Ho Kim, Chanki Lee, Ji Hey Kwon, Yong-Tak Lee, Byeong Ha Lee

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216D (2012) https://doi.org/10.1117/12.975120
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

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.

Citation Download Citation

Young Ho Kim, Chanki Lee, Ji Hey Kwon, Yong-Tak Lee, and Byeong Ha Lee "High finesse interferometric hydrogen sensor based on fiber-optic Fabry-Perot cavity modulations", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216D (7 November 2012); https://doi.org/10.1117/12.975120

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