Photonic Hydrophones Based on Coated Fiber Bragg Gratings.
Photonic Hydrophones Based on Coated Fiber Bragg Gratings. Photonic Hydrophones Based on Coated Fiber Bragg Gratings.
Optoelectronic Division, Engineering Department University of Sannio, Benevento (Italy) FBG Hydrophone Fabrication Optical Fiber SOCIETÀ ITALIANA DI FISICA XCVIII CONGRESSO NAZIONALE Napoli, 17-21 Settembre 2012 A TEFLON® modular holder was properly designed to fabricate DAMIVAL cylindrical coatings with different sizes. Assembled holder Optical fiber Screw Perfored plate DAMIVAL FBGs A cylindrical holder was properly designed to fabricate ARALDITE coatings. Plastic mould TEFLON modulus Araldite Coating D-5 : D C = 5mm ; h = 4 cm D-10 : D C = 10 mm ; h = 4 cm A-5 : D C = 5mm ; h = 4 cm
Vac [V] CONDITIONING CIRCUIT TUNABLE LASER Vac [V] Vac [V] 2 0 -2 1 0 -1 2 1 0 -1 -2 Optoelectronic Division, Engineering Department 2x1 University of Sannio, Benevento (Italy) 3 m coated FBG 1 m 11 m GAIN PZT 2 m Experimental Setup SIGNAL GENERATOR Acoustic source 5 m DATA ACQUISITION 1 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0.5 0 -0.5 -1 PZT FBG 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 1 2 3 Time [ms] 4 5 6 Time [ms] 7 m PZT reference hydrophone SOCIETÀ ITALIANA DI FISICA XCVIII CONGRESSO NAZIONALE Napoli, 17-21 Settembre 2012 Telescopic pole Optical fiber Fiber optic hydrophone weight
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Vac [V]<br />
CONDITIONING<br />
CIRCUIT<br />
TUNABLE LASER<br />
Vac [V]<br />
Vac [V]<br />
2<br />
0<br />
-2<br />
1<br />
0<br />
-1<br />
2<br />
1<br />
0<br />
-1<br />
-2<br />
Optoelectr<strong>on</strong>ic Divisi<strong>on</strong>, Engineering Department<br />
2x1<br />
University of Sannio, Benevento (Italy)<br />
3 m<br />
coated<br />
FBG<br />
1 m<br />
11 m<br />
GAIN<br />
PZT<br />
2 m<br />
Experimental Setup<br />
SIGNAL<br />
GENERATOR<br />
Acoustic<br />
source<br />
5 m<br />
DATA ACQUISITION<br />
1<br />
1<br />
1.5 2 2.5 3 3.5 4 4.5 5 5.5 6<br />
0.5<br />
0<br />
-0.5<br />
-1<br />
PZT<br />
FBG<br />
1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6<br />
1 2 3 Time [ms] 4 5 6<br />
Time [ms]<br />
7 m<br />
PZT reference<br />
hydroph<strong>on</strong>e<br />
SOCIETÀ ITALIANA DI FISICA<br />
XCVIII CONGRESSO NAZIONALE<br />
Napoli, 17-21 Settembre 2012<br />
Telescopic<br />
pole<br />
Optical fiber<br />
<strong>Fiber</strong> optic<br />
hydroph<strong>on</strong>e<br />
weight
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