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Proceedings Paper

Ultra-high sensitive sensitive hydrogen sensor using higher order cladding mode coupled by a palladium-coated long-period fiber grating
Author(s): Young Ho Kim; Myoung Jin Kim; Byung Sup Rho; Hae Yong Choi; Min-su Park; Jae-Hyung Jang; Byeong Ha Lee
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Paper 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.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75030Y (5 October 2009); doi: 10.1117/12.835379
Show Author Affiliations
Young Ho Kim, Gwangju Institute of Science and Technology (Korea, Republic of)
Myoung Jin Kim, Korea Photonics Technology Institute (Korea, Republic of)
Byung Sup Rho, Korea Photonics Technology Institute (Korea, Republic of)
Hae Yong Choi, Gwangju Institute of Science and Technology (Korea, Republic of)
Min-su Park, Gwangju Institute of Science and Technology (Korea, Republic of)
Jae-Hyung 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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