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27 September 2023 Rapid phase interrogation method for dynamic pressure measurement based on Fabry-Perot sensor
Zhiyuan Li, Shuang Wang, Junfeng Jiang, Xiaoshuang Dai, Haokun Yang, Tiegen Liu
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Proceedings Volume 12813, Asia-Pacific Optical Sensors Conference (APOS 2023); 1281309 (2023) https://doi.org/10.1117/12.2691718
Event: Asia Pacific Optical Sensors Conference 2023, 2023, Tianjin, China
Abstract
Phase interrogation method can effectively avoid the operational spacing problems of fiber-optic Fabry-Perot (F-P)sensors. Based on the principles of F-P interference and low coherence interference, polarizers and birefringent crystals are applied to construct signals with quadrature relationship. A four-quadrant inverse tangent operation is employed to accurately calculate the phase values. We have performed rapid, high-speed measurements of dynamic pressure with aF-P sensor. Experimental results show that the method can achieve real-time pressure measurements up to 3 MPa with an interrogation rate of 5 kHz. This research holds much promise for the promotion of interferometric based fiber-optic sensors and applications of pressure measurements.
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Zhiyuan Li, Shuang Wang, Junfeng Jiang, Xiaoshuang Dai, Haokun Yang, and Tiegen Liu "Rapid phase interrogation method for dynamic pressure measurement based on Fabry-Perot sensor", Proc. SPIE 12813, Asia-Pacific Optical Sensors Conference (APOS 2023), 1281309 (27 September 2023); https://doi.org/10.1117/12.2691718
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KEYWORDS
Sensors
Fabry–Perot interferometers
Fiber optics sensors
Optical path differences
Data acquisition
Polarization
Signal detection
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