Title
Underwater acoustic sensors based on fiber bragg gratings.
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.
Year
DOI
Venue
2009
10.3390/s90604446
SENSORS
Keywords
Field
DocType
fiber optics sensors,fiber Bragg gratings,hydrophones
PHOSFOS,Elastic modulus,Optical fiber,Sound pressure,Fiber Bragg grating,Intensity modulation,Coating,Optics,Electronic engineering,Hydrophone,Engineering
Journal
Volume
Issue
ISSN
9
6
1424-8220
Citations 
PageRank 
References 
7
2.58
0
Authors
7