Realization of an optical fiber Bragg grating microphone

Author

Tosi, D. ; Braglia, A. ; Neri, A. ; Perrone, G. ; Vallan, A.

Author_Institution

Dept. of Electron., Politec. di Torino, Torino, Italy

fYear

2011

fDate

10-12 May 2011

Firstpage

1

Lastpage

5

Abstract

We present an optical fiber Bragg grating (FBG) sensor suitable for the acquisition of high frequency vibrations, well exceeding also the highest end of the audio band. The optical sensing system employs a simple principle of operation based on intensity modulation and is implemented with off-the-shelf telecom devices. Then, advanced signal processing algorithms are used to mitigate noise and improve the sound analysis in the frequency domain. Experimental results validate the effective operation of the sensing system in practical applications.

Keywords

Bragg gratings; fibre optic sensors; intensity modulation; microphones; optical fibres; advanced signal processing algorithms; audio band; frequency domain; high frequency vibrations; intensity modulation; noise mitigation; off-the-shelf telecom devices; optical fiber Bragg grating microphone; optical fiber Bragg grating sensor; optical sensing system; sound analysis; Fiber gratings; Microphones; Optical fiber sensors; Optical fibers;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE

Conference_Location

Binjiang

ISSN

1091-5281

Print_ISBN

978-1-4244-7933-7

Type

conf

DOI

10.1109/IMTC.2011.5944024

Filename

5944024