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High sensitivity temperature sensor based on balloon-shaped bent SMF structure with its original polymer coating

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journal contribution
posted on 2018-07-09, 09:14 authored by Ke Tian, Gerald Farrell, ELFED LEWISELFED LEWIS, Xianfan Wang, Haidong Liang, Pengfei Wang
A high sensitivity optical fibre temperature sensor is demonstrated based on a balloon-shaped bent single-mode (BSBS) fibre structure where the fibre retains its original protective polymer coating. The BSBS fibre structure can be simply realized by bending a coated straight single-mode fibre into the balloon shape using a section of silica capillary tube. By adjusting the bending radius of the balloon-shaped fibre section, a modal interferometer between the core mode and the coating mode can be effectively implemented at a suitable bending radius. Considering the intrinsically high thermo-optical coefficient and thermal expansion coefficient of the polymer coating, the BSBS fibre structure offers excellent temperature sensing performance. Experimental results show that the temperature sensitivity is as high as  −2465 pm °C−1 with a resolution of 0.008 °C over the temperature range of 20.7 °C–31.7 °C. Based on its simple fabrication process, very low cost, and experimentally determined high sensitivity coupled with good repeatability, the temperature sensor described in this article could be a competitive candidate in many temperature sensing applications.

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Tensor network algorithms for two-dimensional strongly correlated lattice systems

Deutsche Forschungsgemeinschaft

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Publication

Measurement Science and Technology;29 (8)

Publisher

IOP Publishing

Note

peer-reviewed

Other Funding information

National Key R&D Program of China, National Natural Science Foundation of China, Natural Science Foundation of Heilongjiang, State Key Laboratory on Integrated Optoelectronic, Government of Ireland Postgraduate Scholarship

Rights

This is the accepted version of "High sensitivity temperature sensor based on balloon-shaped bent SMF structure with its original polymer coating" published in Measurement Science and Technology, 2018, 29 (8). The final published version is available at https://doi.org/10.1088/1361-6501/aac992 © IOP Publishing

Language

English

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