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- Title
Underwater Acoustic Sensors Based on Fiber Bragg Gratings.
- Authors
Campopiano, Stefania; Cutolo, Antonello; Cusano, Andrea; Giordano, Michele; Parente, Giuseppe; Lanza, Giuseppe; Laudati, Armando
- 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.
- Subjects
OPTICAL fiber detectors; UNDERWATER acoustic instruments; HYDROPHONE; SOUND pressure; ACOUSTIC radiation pressure; SENSITIVITY analysis; FIBER optics; GEOMETRY; ELECTROACOUSTIC transducers
- Publication
Sensors (14248220), 2009, Vol 9, Issue 6, p4446
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s90604446