High sensitivity temperature sensor based on a polymer filled hollow core optical fibre interferometer

Rahul Kumar; Wai Pang Ng; Yong-Qing Fu; Jinhui Yuan; Chongxiu Yu; Gerald Farrell; Yuliya Semenova; Qiang Wu

doi:10.1117/12.2265041

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23 April 2017 High sensitivity temperature sensor based on a polymer filled hollow core optical fibre interferometer

Rahul Kumar, Wai Pang Ng, Yong-Qing Fu, Jinhui Yuan, Chongxiu Yu, Gerald Farrell, Yuliya Semenova, Qiang Wu

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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103233H (2017) https://doi.org/10.1117/12.2265041
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

A high-sensitivity temperature sensor based on a singlemode-multimode-polymer filled hollow core fibre-multimode-singlemode (SMHMS) fibre structure is proposed. This sensor was made from a short section of hollow core fibre filled with a high thermo-optic coefficient (TOC) polymer with a refractive index close to that of the fibre cladding, fusion spliced between two singlemode-multimode (SM) fibre structures. This sensor effectively improves the temperature sensitivity by over 200 times by comparison to a conventional singlemode-multimode-singlemode (SMS) fibre structure. In this report, we experimentally demonstrate that the proposed sensor provides a high temperature sensitivity of 2.16 nm/°C.

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Rahul Kumar, Wai Pang Ng, Yong-Qing Fu, Jinhui Yuan, Chongxiu Yu, Gerald Farrell, Yuliya Semenova, and Qiang Wu "High sensitivity temperature sensor based on a polymer filled hollow core optical fibre interferometer", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233H (23 April 2017); https://doi.org/10.1117/12.2265041

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