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김광택,이상원,김동근,최누리,이종력,백세종,Kim, Kwang Taek,Lee, Sang Won,Kim, Dong Geun,Choi, Nu Ri,Lee, Jong Ryeok,Baik, Se Jong 한국전기전자재료학회 2018 전기전자재료학회논문지 Vol.31 No.3
We have proposed a hydrogen detection sensor based on a Pd (palladium)-coated, single-mode, optical fiber. The experimental results demonstrated that the sensor could detect hydrogen in air as well as in insulation oil. The influence of Pd film thickness and environmental temperature on response time and sensitivity was analyzed. The reflected optical power at the optical-fiber/Pd interface decreased as the concentration of hydrogen increased, in both air and the insulation oil. The sensor showed 0.75 dB of optical power variation when the concentration of dissolved hydrogen was saturated in the insulation oil.