Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Influence of membrane surface shape change on the performance characteristics of a fiber optic microphone

Not Accessible

Your library or personal account may give you access

Abstract

At a reflective intensity modulated fiber optic microphone (RIM-FOM), the acoustic signal makes a membrane vibrate and modulate the reflected intensity. In the existing models of the RIM-FOM, the offset of all points of the membrane, due to the vibration, is assumed to be equal. However, this assumption does not represent the actual vibration of the membrane, which follows a continuous surface shape change caused by the acoustic signal. We establish a revised theoretical model in which the influence of the actual membrane surface shape change on the reflective intensity modulation is considered. Experiments show that there is a discrepancy between the experimental optimum operating distance and the analytical result from the existing model, while our new model gives a better agreement with the experimental results. In particular, our analysis shows that, in using the existing model, the other microphone performance characteristics are misestimated, while our revised model can provide a closer solution.

© 2010 Optical Society of America

Full Article  |  PDF Article
More Like This
Temperature-robust optical microphone with a compact grating interferometric module

Xinyu Hu, Yan Yue, Chen Cai, and Zhi-Mei Qi
Appl. Opt. 62(23) 6072-6080 (2023)

Performance enhancement of polyurethane foam applied to optical fiber microphones

Lai Zhang, Qiuheng Song, Xin Lai, Yixiao Ma, Qian Xiao, and Bo Jia
Appl. Opt. 61(15) 4322-4328 (2022)

Fiber-optic microphones for battlefield acoustics

John P. F. Wooler and Roger I. Crickmore
Appl. Opt. 46(13) 2486-2491 (2007)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (12)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved