Air pressure measurement of circular thin plate using optical fiber multimode interferometer

Bai, Yufang, Zeng, Jie, Huang, Jiwei, Yan, Zhenfeng, Wu, Yaxing, Li, Kaiyu, Wu, Qiang and Liang, Dakai (2021) Air pressure measurement of circular thin plate using optical fiber multimode interferometer. Measurement, 182. p. 109784. ISSN 0263-2241

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Official URL: https://doi.org/10.1016/j.measurement.2021.109784

Abstract

In this paper, a simple singlemode-multimode-singlemode (SMS) optical fiber sensor is proposed and investigated for measuring the air pressure of a circular thin plate. Theoretical analysis and experimental demonstration are presents in this paper. The air pressure changes the strain and bending radius of the SMS sensor directly attached to the thin plate, and hence leads to shifts and intensity variation of the transmission spectrum. The relationship between transmission spectrum and pressure has studied by finite element method and optical simulation analysis. Experimental results show that the intensity-pressure and wavelength-pressure are − 0.2718 dB/kPa and −106.7 pm/kPa in a pressure range of 70–130 kPa, respectively. The repeatability of the sensor is good, and the hysteresis rate is low. The key features of the proposed sensor are its simple structure and manufacturing process, low manufacturing cost. It can be used for high-precision pressure measurement.

Item Type: Article
Additional Information: Funding Information: This research was supported by the Fund of Aeronautics Science (Grant Nos.: 20170252004, 20185644006, 20200009023017) and the Key Research and Development Plan of Jiangsu Province-Industrial Foresight and Common Key Technology (Competition Project) (Grant No.: BE2018047).
Uncontrolled Keywords: SMS optical fiber sensor, Multimode interference, Circular thin plate, Air pressure measurement
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 09 Dec 2021 14:20
Last Modified: 09 Dec 2021 14:30
URI: http://nrl.northumbria.ac.uk/id/eprint/47945

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