Paper
27 November 2023 Stable phase demodulation system for graphene oxide-based Fabry-Perot acoustic sensor
Anqi Chen, Shuang Wang, Lili Hou, Zhiyuan Li, Xueping Li, Haokun Yang, Xiaona Du, Junfeng Jiang, Tiegen Liu
Author Affiliations +
Abstract
Among fiber optic acoustic sensors, Fabry-Perot sensors have attracted increasing research attention due to their high sensitivity, simple structure, and ease of preparation. The vibrating diaphragm of Fabry-Perot sensors is the key to achieve high performance. Compared to traditional diaphragms based on metal or polymer, 2D materials with the features of high Young's modulus and ultra-thinness are ideal diaphragm materials for significantly enhancing the acoustic sensitivity and broadening frequency range of the sensors. In this work, graphene oxide is used as the vibrating diaphragm due to the water solubility and the ease of thin-film preparation. In order to improve the stability of the system, we have developed a phase demodulation method using three orthogonal signals. The three-path phase-shifting algorithm can eliminate the effect of DC offset from the unstable optical signal. Our graphene oxide-based Fabry-Perot acoustic sensor can test and demodulate the vibration signal in real-time, demonstrating long-term stability and insensitivity to changes in light intensity.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Anqi Chen, Shuang Wang, Lili Hou, Zhiyuan Li, Xueping Li, Haokun Yang, Xiaona Du, Junfeng Jiang, and Tiegen Liu "Stable phase demodulation system for graphene oxide-based Fabry-Perot acoustic sensor", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127710U (27 November 2023); https://doi.org/10.1117/12.2689233
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Demodulation

Sensors

Acoustics

Vibration

Fiber optics sensors

Fabry–Perot interferometers

Graphene

RELATED CONTENT


Back to Top