Highly sensitive temperature sensor based on D-shaped microfiber with high birefringence

Haipeng Luo; Qizhen Sun; Zhilin Xu; Weihua Jia; Deming Liu

doi:10.1117/12.2059469

2 June 2014 Highly sensitive temperature sensor based on D-shaped microfiber with high birefringence

Haipeng Luo, Qizhen Sun, Zhilin Xu, Weihua Jia, Deming Liu

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915787 (2014) https://doi.org/10.1117/12.2059469
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A high sensitive temperature sensor based on D-shaped microfiber with high birefringence is proposed and demonstrated. In order to obtain D-shaped microfiber, we polish a single mode fiber (SMF) and then taper down the polished region into micrometer size. By utilizing Sagnac loop interferometer, we achieve high refractive index (RI) sensitivity of 9951nm/RIU. Further, we realize temperature detection assisted by sucrose solution with high thermo-optic coefficient. Experimental results demonstrate high temperature sensitivity up to -0.98921nm/°C within the range of 22°C-60°C. The sensor is featured with high sensitivity, compact structure and easy fabrication.

Citation Download Citation

Haipeng Luo, Qizhen Sun, Zhilin Xu, Weihua Jia, and Deming Liu "Highly sensitive temperature sensor based on D-shaped microfiber with high birefringence", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915787 (2 June 2014); https://doi.org/10.1117/12.2059469

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