Photonic Hydrophones Based on Coated Fiber Bragg Gratings.
Photonic Hydrophones Based on Coated Fiber Bragg Gratings.
Photonic Hydrophones Based on Coated Fiber Bragg Gratings.
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Optoelectr<strong>on</strong>ic Divisi<strong>on</strong>, Engineering Department<br />
University of Sannio, Benevento (Italy)<br />
DAMIVAL 13650<br />
Thermosetting polyurethane resin<br />
E= 200 MPa<br />
n=0.4<br />
r=1180 kg/m 3<br />
=0.1<br />
Sensor Design<br />
SOCIETÀ ITALIANA DI FISICA<br />
XCVIII CONGRESSO NAZIONALE<br />
Napoli, 17-21 Settembre 2012<br />
Project “ASSO” defines am<strong>on</strong>g the needs and requirements two operating frequency ranges for the underwater<br />
acoustic sensors: a “low” frequency range 0-15 kHz and a “high” frequency range 15-30 kHz<br />
Sensitivity Gain [dB]<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
h=4cm; h = 4 cm D; RC=5mm = 5 mm<br />
C<br />
0<br />
0 5 10 15 20 25 30 35<br />
Frequency [kHz]<br />
Sensitivity Gain [dB]<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
ARALDITE DBF<br />
Epoxy adhesive resin<br />
h=4cm; h = 4 cm D; C=5mm<br />
R = 5 mm<br />
C<br />
E= 2.9 GPa<br />
n=0.345<br />
r=1100 kg/m 3<br />
=0.02<br />
0<br />
0 5 10 15 20 25 30 35<br />
Frequency [kHz]
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