Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1669201 | Thin Solid Films | 2009 | 4 Pages |
Abstract
Response kinetics of a fiber-optic hydrogen gas sensor in air- and inert-atmosphere were characterized. The sensor is mainly based on the evanescent field interaction in hydrogen sensitive cladding which is used Platinum-supported tungsten trioxide (Pt/WO3). When the sensor was exposed to 1 vol.% H2/air and H2/N2 gas, the changes in optical power propagating through the fiber were about 30% and 50%, respectively. The detection limit was about 0.1 vol.% in air-atmosphere. The humidity dependence of the response kinetics was also evaluated. While the response speed in N2-atmosphere was accelerated, the speed in air-atmosphere was suppressed by the humidity.
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
N. Matsuyama, S. Okazaki, H. Nakagawa, H. Sone, K. Fukuda,