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Proceedings Paper

Temperature-dependent fiber optic hydrogen gas sensor response characteristics
Author(s): Hua Xia; Kung-Li Deng; Ken Bousman; Juntao Wu; Boon Lee; Renato Guida; Kevin McCarthy
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Paper Abstract

Dynamic response characteristics of silica fiber long-period grating with a modified cladding, composed of ∼10-100 nm nanoparticle palladium oxides thin film material prepared by a magnetron sputtering technique, have been investigated at several elevated temperatures with a 2%H2/98%N2 mixing gas concentration. The fiber cladding modified grating, without cladding chemical etching process, demonstrates 540 pm per 1% H2 sensitivity, a better than 1sec response times at 160oC, respectively. The thermal responses of the prototype have demonstrated increased dynamic wavelength shift while reducing response time simultaneously. The observed thermal dependence of the prototype could be attributed to a combined effect of thermal dependent hydrogen atoms diffusion rate and hydrogen atoms solubility.

Paper Details

Date Published: 24 August 2006
PDF: 7 pages
Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 631411 (24 August 2006); doi: 10.1117/12.681294
Show Author Affiliations
Hua Xia, General Electric, Global Research Ctr. (United States)
Kung-Li Deng, General Electric, Global Research Ctr. (United States)
Ken Bousman, General Electric, Global Research Ctr. (United States)
Juntao Wu, General Electric, Global Research Ctr. (United States)
Boon Lee, General Electric, Global Research Ctr. (United States)
Renato Guida, General Electric, Global Research Ctr. (United States)
Kevin McCarthy, General Electric, Global Research Ctr. (United States)


Published in SPIE Proceedings Vol. 6314:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII
Francis T. S. Yu; Ruyan Guo; Shizhuo S. Yin, Editor(s)

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