A novel microbending optical fiber temperature sensor

Xuejin Li D.V.M.; Yuquan Chen; Yuanlong Deng

doi:10.1117/12.839634

23 November 2009 A novel microbending optical fiber temperature sensor

Xuejin Li D.V.M., Yuquan Chen, Yuanlong Deng

Proceedings Volume 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications; 75080N (2009) https://doi.org/10.1117/12.839634
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

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.

Citation Download Citation

Xuejin Li D.V.M., Yuquan Chen, and Yuanlong Deng "A novel microbending optical fiber temperature sensor", Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080N (23 November 2009); https://doi.org/10.1117/12.839634

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