All-fiber temperature sensor based on Fabry-Perot interferometer

Chunmei Shangguan; Mingli Dong; Lidan Lu

doi:10.1117/12.2606994

24 November 2021 All-fiber temperature sensor based on Fabry-Perot interferometer

Chunmei Shangguan, Mingli Dong, Lidan Lu

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120653H (2021) https://doi.org/10.1117/12.2606994
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

An all-fiber Fabry-Perot interferometric sensor is demonstrated both theoretically and experimentally. The proposed structure is designed and fabricated by chemical etching combined with arc discharge welding and tapering. The single-mode fiber (SMF-28) with one end face flattened is inserted vertically into the hydrofluoric acid, then welded with another SMF-28 by arc discharge, to form a bubble by welding and tapering, which exhibits a three-beam interference phenomenon. High-temperature sensitivity of 12.88 pm/°C is obtained at the large temperature range from 50 to 300 °C, with excellent linearity of 0.9956. The Fabry-Perot Interferometer , with low processing cost and high performance, can provide a useful application in temperature sensing prospects.

Citation Download Citation

Chunmei Shangguan, Mingli Dong, and Lidan Lu "All-fiber temperature sensor based on Fabry-Perot interferometer", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120653H (24 November 2021); https://doi.org/10.1117/12.2606994

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