Temperature-dependent fiber optic hydrogen gas sensor response characteristics

Hua Xia; Kung-Li Deng; Ken Bousman; Juntao Wu; Boon Lee; Renato Guida; Kevin McCarthy

doi:10.1117/12.681294

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24 August 2006 Temperature-dependent fiber optic hydrogen gas sensor response characteristics

Hua Xia, Kung-Li Deng, Ken Bousman, Juntao Wu, Boon Lee, Renato Guida, Kevin McCarthy

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Proceedings Volume 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII; 631411 (2006) https://doi.org/10.1117/12.681294
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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 160^oC, 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.

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Hua Xia, Kung-Li Deng, Ken Bousman, Juntao Wu, Boon Lee, Renato Guida, and Kevin McCarthy "Temperature-dependent fiber optic hydrogen gas sensor response characteristics", Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 631411 (24 August 2006); https://doi.org/10.1117/12.681294

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