A tension insensitive PbS fiber temperature sensor based on Sagnac interferometer

Xing-hu Fu; Jiang-peng Zhang; Kai-li Yang; Yan-hua Dong; Jian-xiang Wen; Guang-wei Fu; Wei-hong Bi

doi:10.1007/s11801-017-6238-z

Optoelectronics Letters ›› , Vol. 13 ›› Issue (2) : 135-137. DOI: 10.1007/s11801-017-6238-z

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A tension insensitive PbS fiber temperature sensor based on Sagnac interferometer

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Abstract

In this paper, a tension insensitive PbS fiber temperature sensor based on Sagnac interferometer is proposed and demonstrated. The sensing mechanism of tension and temperature is analyzed. The relationships between the interference spectrum, temperature and tension are analyzed, respectively. The experimental temperature range is 36—70 °C. The experimental results show that the interference spectrum is red shifted, and its sensitivity is 53.89 pm/°C. In tension experiment, the tension range is 0—1 400 με. The experimental results show that there is no wavelength shift in the interference spectrum. The sensor is immune to tension cross-sensitivity compared with other sensors. It can be used for temperature testing in aerospace, chemistry and pharmacy.

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Xing-hu Fu, Jiang-peng Zhang, Kai-li Yang, Yan-hua Dong, Jian-xiang Wen, Guang-wei Fu, Wei-hong Bi. A tension insensitive PbS fiber temperature sensor based on Sagnac interferometer. Optoelectronics Letters, , 13(2): 135‒137 https://doi.org/10.1007/s11801-017-6238-z

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This work has been supported by the National Natural Science Foundation of China (Nos.61675176, 61575170 and 61475133), the Research Program of Hebei Province (Nos.16961701D and F2015203270), the Graduate Innovation Project (Nos.2015XJSS031 and 2015XJSS028), and the “XinRuiGongCheng” Talent Project of Yanshan University.