FBG cascade EFPI multi-parameter optical fiber sensor based on GMPC coating

Chi Liu; Shen Tao; Yue Feng; Yue Yuan; Tianyu Yang; Shengxu Zhao

doi:10.1117/12.3007866

18 December 2023 FBG cascade EFPI multi-parameter optical fiber sensor based on GMPC coating

Chi Liu, Shen Tao, Yue Feng, Yue Yuan, Tianyu Yang, Shengxu Zhao

Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 129681T (2023) https://doi.org/10.1117/12.3007866
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Magnetic sensitive material, giant magnetostrictive powder composite (GMPC), coated fiber bragg grating (FBG) cascaded extrinsic Fabry Pérot interferometer (EFPI) multi-parameter optical fiber sensor is proposed. Which enables the simultaneous detection of temperature, magnetic field and strain. The proposed sensor uses a double FBG cascade EFPI structure including GMPC coated FBG with a wavelength of 1550 nm to achieve magnetic field sensing. The results show that the sensor has a maximum temperature sensitivity of 175.4 pm/℃, a maximum magnetic field sensitivity of -1.54 pm/mT and a maximum stress sensitivity of -9.55 pm/με. The proposed multi-parameter optical fiber sensor solves the multi-parameter cross-sensitivity problem, while the sensor has the characteristics of low cost, interference resistance, compact structure, simple preparation process and long distance transmission. The sensor has promising applications in areas such as biomedicine, environmental detection and military applications, and oil well survey, industrial production, power systems and so on.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chi Liu, Shen Tao, Yue Feng, Yue Yuan, Tianyu Yang, and Shengxu Zhao "FBG cascade EFPI multi-parameter optical fiber sensor based on GMPC coating", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 129681T (18 December 2023); https://doi.org/10.1117/12.3007866

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