Fiber Bragg grating temperature sensor for multiplexed measurement with high resolution

Yage Zhan; Haiwen Cai; Ronghui Qu; Shiqing Xiang; Zujie Fang; Xiangzhao Wang

doi:10.1117/1.1786938

1 October 2004 Fiber Bragg grating temperature sensor for multiplexed measurement with high resolution

Yage Zhan, Haiwen Cai, Ronghui Qu, Shiqing Xiang, Zujie Fang, Xiangzhao Wang

Author Affiliations +

Optical Engineering, Vol. 43, Issue 10, (October 2004). https://doi.org/10.1117/1.1786938

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.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yage Zhan, Haiwen Cai, Ronghui Qu, Shiqing Xiang, Zujie Fang, and Xiangzhao Wang "Fiber Bragg grating temperature sensor for multiplexed measurement with high resolution," Optical Engineering 43(10), (1 October 2004). https://doi.org/10.1117/1.1786938

Published: 1 October 2004

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