High sensitivity fiber optic acceleration sensor based on Fabry-Perot interferometer

Wang D.; Wu Y.; Zhu L.Song Y.Wang Y.

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High sensitivity fiber optic acceleration sensor based on Fabry-Perot interferometer

机译：High sensitivity fiber optic acceleration sensor based on Fabry-Perot interferometer

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? 2022 Elsevier Inc.A high sensitivity fiber optic acceleration sensor based on Fabry-Perot interferometer is proposed and experimentally demonstrated. The proposed sensor is composed of a sensor pedestal, a mass block, elastic diaphragm and two reflectors, wherein the collimating reflector 1 and the reflector 2 constitute a fiber Fabry-Perot (F-P) interference cavity. By analyzing the relevant parameters of F-P interference theory, we modulate the F-P reflection spectrum with high finesse, and demodulate the F-P reflection spectrum by wavelength demodulation method to obtain the acceleration signal. Through simulation analysis and experimental verification, the resonant frequency, sensitivity and lateral anti-interference ability of the sensor have been investigated. The experimental results show that the resonant frequency of the sensor is 800 Hz, the sensitivity is 3.81 nm/g when the frequency is 300 Hz, the resolution is 0.263 mg, and the lateral anti-interference degree is less than 5 . Furthermore, the proposed acceleration sensor exhibits the advantages of simple structure and low cost, and has great application prospects in the vibration monitoring of the pitch bearing of wind power generation.

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来源
《Optical fiber technology》 |2022年第9期|1.1-1.8|共8页
作者
Wang D.; Wu Y.; Zhu L.Song Y.Wang Y.;
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作者单位

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science & Technology University;

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science & Technology University||Beijing Key Laboratory of Optoelectronic Measurement Technology Beijing Information Science & Technol;

Beijing Laboratory of Optical Fiber Sensing and System Beijing Information Science & Technology UniversityBeijing Laboratory of Optical Fiber Sensing and System Beijing Information Science & Technology University||Beijing Key Laboratory of Optoelectronic Measurement Technology Beijing Information Science & Technology UniversityKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science & Technology UniversityKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Be;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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关键词
Acceleration sensor; Fabry-Perot interference; High sensitivity; Intermediate frequency;

High sensitivity fiber optic acceleration sensor based on Fabry-Perot interferometer

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