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Proceedings Paper

High-frequency optical fiber microphone for condition-based maintenance application
Author(s): Daniele Tosi; Massimo Olivero; Guido Perrone; Alberto Vallan
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Paper Abstract

A low-cost optical fiber Bragg grating-based microphone is presented. The sensing system makes use of an intensitybased interrogation approach, with a fixed-wavelength laser source employed as optical source. The optical sensor is complemented by signal processing, consisting of adaptive filters and a Capon power spectral density estimator. System characterization has been carried out, showing maximum sensitivity in the 120-450 Hz range, with 0.45 Hz repeatability on single-tone detection. Application for condition-based maintenance of industrial plants, based on a simulated model, is discussed.

Paper Details

Date Published: 13 May 2013
PDF: 10 pages
Proc. SPIE 8788, Optical Measurement Systems for Industrial Inspection VIII, 87880Z (13 May 2013); doi: 10.1117/12.2019249
Show Author Affiliations
Daniele Tosi, Univ. of Limerick (Ireland)
Massimo Olivero, Politecnico di Torino (Italy)
Guido Perrone, Politecnico di Torino (Italy)
Alberto Vallan, Politecnico di Torino (Italy)

Published in SPIE Proceedings Vol. 8788:
Optical Measurement Systems for Industrial Inspection VIII
Peter H. Lehmann; Wolfgang Osten; Armando Albertazzi, Editor(s)

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