Abstract

Position estimation of a sound source based on time difference of arrival at an array of three acousto-optic sensors is introduced. Each sensor consists of a Mach-Zehnder interferometer including a sensing part in one arm that is a piece of fiber surrounded by membrane in order to enhance the acousto-optic effect. Estimation error of a recorded gunshot sound signal was evaluated with the theoretically calculated values for two different locations.

© 2017 Optical Society of Korea

Locating acoustic emission with an amplitude-multiplexed acoustic sensor array based on a modified Mach–Zehnder interferometer

Jianmin Gong, J. M. K. MacAlpine, Wei Jin, and Yanbiao Liao
Appl. Opt. 40(34) 6199-6202 (2001)

Sound source direction-of-arrival estimation method for microphone array based on ultra-weak fiber Bragg grating distributed acoustic sensor

Zhihui Luo, Bo Lu, Jianglou Huang, Changyan Ran, and HuiLing He
Opt. Express 31(19) 31342-31353 (2023)

All-fiber-optic acoustic sensor array for real-time sound source localization

Jian Wang, Hongyan Wu, and Bo Jia
Appl. Opt. 56(12) 3347-3353 (2017)

Membrane-free acoustic sensing based on an optical fiber Mach–Zehnder interferometer

Wenhua Zhu, Danyang Li, Jiaojiao Liu, and Ruohui Wang
Appl. Opt. 59(6) 1775-1779 (2020)

Interrogation of a ring-resonator ultrasound sensor using a fiber Mach-Zehnder interferometer

Fellipe Grillo Peternella, Boling Ouyang, Roland Horsten, Michael Haverdings, Pim Kat, and Jacob Caro
Opt. Express 25(25) 31622-31639 (2017)