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Optical Engineering

Fiber Bragg grating temperature sensor for multiplexed measurement with high resolution
Author(s): Yage Zhan; Haiwen Cai; Ronghui Qu; Shiqing Xiang; Zujie Fang; Xiangzhao Wang
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Paper Abstract

A novel fiber Bragg grating temperature sensor is proposed and experimentally demonstrated with a long-period grating as a linear response edge filter to convert wavelength into intensity-encoded information for interrogation. The sensor is embedded into an aluminum substrate with a larger coefficient of thermal expansion to enhance its temperature sensitivity. A large dynamic range of 110 °C and a high resolution of 0.02 °C are obtained in the experiments. The technique can be used for multiplexed measurements with one broadband source and one long-period grating, and therefore is low cost.

Paper Details

Date Published: 1 October 2004
PDF: 4 pages
Opt. Eng. 43(10) doi: 10.1117/1.1786938
Published in: Optical Engineering Volume 43, Issue 10
Show Author Affiliations
Yage Zhan, Shanghai Institute of Optics and Fine Mechanics (China)
Haiwen Cai, Shanghai Institute of Optics and Fine Mechanics (China)
Ronghui Qu, Shanghai Institute of Optics and Fine Mechanics (China)
Shiqing Xiang, Shanghai Institute of Optics and Fine Mechanics (China)
Zujie Fang, Shanghai Institute of Optics and Fine Mechanics (China)
Xiangzhao Wang, Shanghai Institute of Optics and Fine Mechanics (China)


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