A few mode fiber temperature sensor with double gourd structure

Xinghu Fu; Jiahao Zhou; Ming Xu; Yufan Wang; Wa Jin; Guangwei Fu; Weihong Bi

doi:10.1117/12.2620675

26 July 2022 A few mode fiber temperature sensor with double gourd structure

Xinghu Fu, Jiahao Zhou, Ming Xu, Yufan Wang, Wa Jin, Guangwei Fu, Weihong Bi

Proceedings Volume 12279, 2021 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 1227908 (2022) https://doi.org/10.1117/12.2620675
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

In this paper, a FMF sensor with double gourd structure is prepared. The transmission spectrum and mode changes of double gourd structure with different lengths are studied, the temperature sensitivity and linearity of the sensor are analyzed. Five sensors with different FMF lengths are prepared. The waist-enlarged spacing are 0.7cm, 1.0cm, 1.3cm, 1.6cm and 1.9cm, respectively. The FMF length are 4.1cm, 5cm, 5.9cm, 6.8cm and 7.7cm, respectively. The experimental results show that the highest temperature sensitivity of FMF sensor is 86.95pm/℃. There is no one-to-one correspondence between the temperature sensitivity and the length of the sensor.

Citation Download Citation

Xinghu Fu, Jiahao Zhou, Ming Xu, Yufan Wang, Wa Jin, Guangwei Fu, and Weihong Bi "A few mode fiber temperature sensor with double gourd structure", Proc. SPIE 12279, 2021 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 1227908 (26 July 2022); https://doi.org/10.1117/12.2620675

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KEYWORDS

Sensors

Fiber optics sensors

Structured optical fibers

Temperature sensors

Temperature metrology

Refractive index

Single mode fibers

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