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Proceedings Paper

Underwater acoustic sensors based on fiber Bragg gratings
Author(s): A. Cusano; M. Pisco; G. Parente; G. Lanza; A. Laudati; M. Giordano; S. Campopiano; A. Cutolo
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Paper Abstract

We report on recent results obtained with a fiber optic hydrophone based on the intensity modulation of the laser light in a FBG (Fiber Bragg Grating) under the influence of the sound pressure. In order to control the behavior of the hydrophone in terms of sensitivity and bandwidth, FBGs have been coated with proper materials, characterized by different elastic modulus and shapes. In particular, new experiments have been carried out using a cylindrical geometry with two different coating, showing that the sensitivity is not influenced by the shape but by the transversal dimension and the material characteristics of the coating.

Paper Details

Date Published: 1 October 2009
PDF: 8 pages
Proc. SPIE 7482, Electro-Optical Remote Sensing, Photonic Technologies, and Applications III, 74820I (1 October 2009); doi: 10.1117/12.830716
Show Author Affiliations
A. Cusano, Univ. of Sannio (Italy)
M. Pisco, Univ. of Sannio (Italy)
G. Parente, OptoSmart s.r.l. (Italy)
G. Lanza, OptoSmart s.r.l. (Italy)
A. Laudati, OptoSmart s.r.l. (Italy)
M. Giordano, Istituto per i Materiali Compositi e Biomedici (Italy)
S. Campopiano, Univ. of Naples (Italy)
A. Cutolo, Univ. of Sannio (Italy)


Published in SPIE Proceedings Vol. 7482:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications III
Gary J. Bishop; John D. Gonglewski; Keith L. Lewis; Richard C. Hollins; Thomas J. Merlet; Gary W. Kamerman; Ove K. Steinvall, Editor(s)

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