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

doi:10.1117/12.2689233

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

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127710U (2023) https://doi.org/10.1117/12.2689233
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available