Ultra-high sensitive sensitive hydrogen sensor using higher order cladding mode coupled by a palladium-coated long-period fiber grating

Young Ho Kim; Myoung Jin Kim; Byung Sup Rho; Hae Yong Choi; Min-su Park; Jae-Hyung Jang; Byeong Ha Lee

doi:10.1117/12.835379

5 October 2009 Ultra-high sensitive sensitive hydrogen sensor using higher order cladding mode coupled by a palladium-coated long-period fiber grating

Young Ho Kim, Myoung Jin Kim, Byung Sup Rho, Hae Yong Choi, Min-su Park, Jae-Hyung Jang, Byeong Ha Lee

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75030Y (2009) https://doi.org/10.1117/12.835379
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

We demonstrate a simple but highly sensitive hydrogen sensor based on palladium-coated long-period fiber grating (LPG) inscribed in low core index fiber, which induces higher order cladding modes. As palladium layer absorbed 4% of hydrogen gas, the dual resonant wavelengths of the higher order cladding mode (LP₀₈) are shifted to the opposite direction. The spectral sensitivity was much higher than those of other fiber-optic palladium-coated hydrogen sensors.

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Young Ho Kim, Myoung Jin Kim, Byung Sup Rho, Hae Yong Choi, Min-su Park, Jae-Hyung Jang, and Byeong Ha Lee "Ultra-high sensitive sensitive hydrogen sensor using higher order cladding mode coupled by a palladium-coated long-period fiber grating", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75030Y (5 October 2009); https://doi.org/10.1117/12.835379

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