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Proceedings Paper

Optical sensor based on hybrid LPG/FBG in D-fiber for simultaneous refractive index and temperature measurement
Author(s): Xianfeng Chen; Kaiming Zhou; Lin Zhang; Ian Bennion; Tongyu Liu
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Paper Abstract

A dual-parameter optical sensor has been realized by UV-writing a long-period and a Bragg grating structure in D-fiber. The hybrid configuration permits the detection of the temperature from the latter and measuring the external refractive index from the former responses, respectively. The employment of the D-fiber allows as effective modification and enhancement of the device sensitivity by cladding etching. The grating sensor has been used to measure the concentrations of aqueous sugar solutions, demonstrating the potential capability to detect concentration changes as small as 0.01%.

Paper Details

Date Published: 14 February 2005
PDF: 6 pages
Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.570219
Show Author Affiliations
Xianfeng Chen, Aston Univ. (United Kingdom)
Kaiming Zhou, Aston Univ. (United Kingdom)
Lin Zhang, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)
Tongyu Liu, Intelligent Sensor Systems Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 5634:
Advanced Sensor Systems and Applications II
Yun-Jiang Rao; Osuk Y. Kwon; Gang-Ding Peng, Editor(s)

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