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http://dx.doi.org/10.3807/HKH.2007.18.6.389

Hydrogen Detection System Based on Pd Coated Single Mode Fiber Sensor  

Kim, Kwang-Taek (Department of Electronic and Photonic Engineering, Honam University)
Park, Son-Oc (Department of Electronic and Photonic Engineering, Honam University)
HwangBo, Seung (Department of Electronic and Photonic Engineering, Honam University)
Mah, Jae-Pyung (Department of Electronic and Photonic Engineering, Honam University)
Baik, Se-Jong (Department of Physics, Chonnam National University)
Im, Kie-Gon (Department of Physics, Chonnam National University)
Kim, Tae-Un (Optical device team, Korea Photonics Technology Institute)
Kim, Hwe-Jong (Optical device team, Korea Photonics Technology Institute)
Publication Information
Korean Journal of Optics and Photonics / v.18, no.6, 2007 , pp. 389-394 More about this Journal
Abstract
The characteristics of the single mode fiber hydrogen sensor have been investigated theoretically and experimentally. Palladium is adopted as a material for the transducer and a thin Ni film is used for the adhesion between the fiber end and the Pd film. It is shown that sensitivity and response time strongly depend on the thickness of Pd film. The single mode fiber sensor coated with 5 nm thick Ni adhesion layer and 10 nm thick Pd transducer layer showed 0.6 dB change of reflectivity and $3{\sim}5$ sec of response time as it absorbed 4% hydrogen gas.
Keywords
Hydrogen sensor; Single mode fiber; Palladium film;
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