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Fast interrogation of dynamic low-finesse Fabry-Perot interferometers: A review
Microwave and Optical Technology Letters ( IF 1.5 ) Pub Date : 2021-06-02 , DOI: 10.1002/mop.32922 Qiang Liu 1 , Wei Peng 1
Microwave and Optical Technology Letters ( IF 1.5 ) Pub Date : 2021-06-02 , DOI: 10.1002/mop.32922 Qiang Liu 1 , Wei Peng 1
Affiliation
Low-finesse fiber-optic Fabry–Perot (F-P) interferometric sensor has the advantages of high sensitivity, anti-electromagnetic interference, and compact size, and is one of the most widely used optical fiber sensors. With the development of sensor design and demodulation algorithms, F-P sensing technique plays an increasingly important role in high-speed dynamic measurement, such as dynamic temperature or pressure, acoustic vibration, dynamic displacement, and distance. Signal demodulation methods largely determine the performance of the entire sensing system. Compared with quasi-static measurement, high-precision measurement of dynamic F-P cavity is more challenging. The advancement of fast tunable laser technology in telecommunication field provides novel perspectives for demodulation methods and dynamic applications based on F-P sensors. This article reviews the latest developments in fast interrogation techniques for dynamic low-finesse F-P sensors, including intensity demodulation, quadrature phase demodulation and absolute cavity length demodulation. In addition, array multiplexing and multi-parameter measurement techniques are also involved.
更新日期：2021-07-01
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