Characteristics of a fiber-optical Fabry–Perot interferometric acoustic sensor based on an improved phase-generated carrier-demodulation mechanism

Mao, Xuefeng; Tian, Xiaoran; Zhou, Xin; Yu, Qingxu

doi:10.1117/1.oe.54.4.046107

Cited by 19 publications

(2 citation statements)

References 8 publications

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“…Furthermore, the use of RRI as signal processing technique for low-finesse FP sensors reduces the constraints on sensor design when compared to PGC. The demodulation algorithm of PGC requires the carrier modulation depth (CMD), which is dependent on cavity length and the maximum frequency shift of the laser [45], to be an optimal value in order to ensure minimal harmonic distortion [9]. This dependence of CMD on cavity length means that sensor heads and modulation parameters have to be specifically tuned to take this into consideration.…”

Section: Discussionmentioning

confidence: 99%

Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique

Barrington

James

Kissinger

et al. 2023

Meas. Sci. Technol.

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Range resolved interferometry (RRI) applied to the interrogation of an extrinsic Fabry-Perot based pressure sensor in laboratory and wind tunnel environments is presented. A simple, compact sensor head design was fabricated and subsequently characterised using RRI, which was shown to have a sensitivity of 1.627×10−3 rad/Pa with a noise standard deviation of 9 Pa over a data rateof 1.5 kHz. When installed in a high-lift wing for surface pressure evaluation during wind tunnel testing, the approach outlined here was able to perform as well as a conventionally employed commercial device for relative static pressure measurements.

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Section: Discussionmentioning

confidence: 99%

Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique

Barrington

James

Kissinger

et al. 2023

Meas. Sci. Technol.

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“…They have been adopted by many commercial instruments. In the PGC demodulation scheme, a high‐frequency sinusoidal phase modulation is applied to the F‐P interferometer to generate a phase carrier, the desired dynamic signals will be converted to the sidebands of the carrier frequency 43 . By detecting one odd harmonic and one even harmonic of the PGC interference signal, two quadrature components containing the dynamic signal are acquired 43–45 .…”

Section: Fast Interrogation Techniquesmentioning

confidence: 99%

Fast interrogation of dynamic low‐finesse Fabry‐Perot interferometers: A review

Liu

Peng

2021

Micro & Optical Tech Letters

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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.

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Analyzing the effect of dynamic properties of materials and operating medium on sensor parameters to increase the performance of diaphragm-based static/dynamic pressure sensors

Tabaru

Hayber

2021

J Comput Electron

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Characteristics of a fiber-optical Fabry–Perot interferometric acoustic sensor based on an improved phase-generated carrier-demodulation mechanism

Cited by 19 publications

References 8 publications

Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique

Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique

Fast interrogation of dynamic low‐finesse Fabry‐Perot interferometers: A review

Analyzing the effect of dynamic properties of materials and operating medium on sensor parameters to increase the performance of diaphragm-based static/dynamic pressure sensors

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