17 November 2014 Fiber-optic temperature sensor based on specialty triple-clad fiber
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A fiber-optic temperature sensor based on specialty triple-clad fiber (STCF) is proposed. Based on coupling mode theory, the STCF can be equivalent to a rod waveguide and two tube waveguides. The different mode dispersion curves are calculated and a resonance wavelength is obtained. A straightforward experiment is performed to prove the temperature sensitivity. Experimental results shows that the temperature sensitivity can be achieve 97.2pm /°C in 20~90°C and there is a good repeatability. The resonance wavelength has a red shift and increase as increasing temperature. Thus, this sensor can be used for temperature monitoring in time.
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Xinghu Fu, Haiyang Xie, Chao Zhang, Peng Guo, Guangwei Fu, Weihong Bi, "Fiber-optic temperature sensor based on specialty triple-clad fiber", Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92741P (17 November 2014); doi: 10.1117/12.2072398; https://doi.org/10.1117/12.2072398

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