Highly Sensitive Graphene Oxide-based Fabry-Perot Low-frequency Acoustic Sensor With Low-coherence Polarized Demodulation Using Three-step Phase-Shifting Arctan Algorithms
Artikel i vetenskaplig tidskrift, 2024

Developing low-frequency acoustic senor with high sensitivity is crucial for diverse applications, ranging from seismic monitoring, military operations, to pipeline surveillance. Here, we have proposed a high-sensitivity graphene oxide (GO)-based Fabry-Perot low-frequency sensor, in which a 170 nm thick, large-area and uniformly GO film was prepared by a vacuum filtration method. To enhance the accuracy and stability of the sensor, a low-coherence interference system based on birefringent crystal blocks was designed utilizing a three-step phase-shifting arctangent algorithm. Our sensor exhibited a sensitivity of -93.48 dB re 1 rad/μPa at 6-60 Hz with a fluctuation of 0.6 dB. The minimum detectable pressure of the sensor was measured at 0.37 μPa/Hz1/2 @20 Hz with a signal to noise ratio of 135.41 dB. Overall, this sensor offers simplicity in preparation, high sensitivity, low detectable sound pressure, making it a significant asset for low-frequency acoustic applications.

Graphene Oxide (GO)

Arctan Algorithms

Fabry-Perot

Vibrations

Demodulation

Resonant frequency

Acoustics

Optical fiber sensors

Low-frequency acoustic sensor

Low-coherence Polarized Demodulation

Sensitivity

Deformation

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Publicerad i

Journal of Lightwave Technology

0733-8724 (ISSN) 1558-2213 (eISSN)

Vol. 42 Nummer/häfte 17 s. 6115-6123

Kategorisering

Ämneskategorier (SSIF 2011)

Annan fysik

Identifikatorer

DOI

10.1109/JLT.2024.3402078

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Senast uppdaterat

2024-09-07