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Proceedings Paper

Temperature-referenced high-sensitivity point-probe optical fiber chem-sensors based on cladding etched fiber Bragg gratings
Author(s): Kaiming Zhou; Xianfeng Chen; George Simpson; Donghui Zhao; Lin Zhang; Ian Bennion
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Paper Abstract

Point-probe optical fiber chem-sensors have been implemented using cladding etched fiber Bragg gratings. The sensors possess refractive index sensing capability that can be utilized to measure chemical concentrations. The Bragg wavelength shift reaches 8 nm when the index of surrounding medium changes from 1.33 to 1.44, giving maximum sensitivity more than 10 times higher than that of previously reported devices. More importantly, the dual-grating configuration of the point-probe sensors offers a temperature reference function, permitting accurate measurement of refractive index encoded chemical concentrations.

Paper Details

Date Published: 1 September 2004
PDF: 6 pages
Proc. SPIE 5459, Optical Sensing, (1 September 2004); doi: 10.1117/12.545708
Show Author Affiliations
Kaiming Zhou, Aston Univ. (United Kingdom)
Xianfeng Chen, Aston Univ. (United Kingdom)
George Simpson, Aston Univ. (United Kingdom)
Donghui Zhao, Aston Univ. (United Kingdom)
Lin Zhang, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 5459:
Optical Sensing
Brian Culshaw; Anna Grazia Mignani; Rainer Riesenberg, Editor(s)

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