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Proceedings Paper

A novel microbending optical fiber temperature sensor
Author(s): Xuejin Li; Yuquan Chen; Yuanlong Deng
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Paper Abstract

This paper presents a novel temperature sensor based on bimetallic strip and optical fiber microbending loss. A bimetallic strip is a mechanical temperature sensor element, is simply constructed from two strips of different metals with different thermal linear expansion coefficient bonded together. A fiber is distorted in a deformer by pressing it between grooved plates. One end of the bimetallic strip is welded on a fixed framework, the other end performed upon the deformer, and form a microbending optical fiber temperature sensor. When the temperature changes, the thermo static bimetallic strip deforms, and causes grooved plates having a displacement according to the temperature changes, and modulates light loss in fiber. The measuring results show measuring range comes to around 100°C with high accuracy and linearity.

Paper Details

Date Published: 23 November 2009
PDF: 5 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080N (23 November 2009); doi: 10.1117/12.839634
Show Author Affiliations
Xuejin Li, Shenzhen Univ. (China)
Yuquan Chen, Shenzhen Univ. (China)
Yuanlong Deng, Shenzhen Univ. (China)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

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