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Proceedings Paper

A fiber optic Bragg grating seismic sensor
Author(s): A. Laudati; F. Mennella; M. Esposito; A. Cusano; M. Giordano; G. Breglio; S. Sorge; C. Calisti Tassini; A. Torre; G. D'Altrui; A. Cutolo
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Paper Abstract

Here we present a fiber optic seismic waves sensor based on in-fiber Bragg gratings. Fiber Bragg Grating sensors have been demonstrated to have very high sensitivity to dynamical strain in the sub-micro-strain range and very extended dynamical response from static to very high frequency. The seismic sensing system is based on the integration of three FBGs dynamical strain sensors in a mechanical structure acting as an inverse pendulum. Polar symmetry of the mechanical system and 120° placement of the FBG sensors guarantee a directional capability of the seismic sensor. Design, manufacturing and preliminary dynamical testing of the seismic sensor are discussed.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66191C (2 July 2007); doi: 10.1117/12.738396
Show Author Affiliations
A. Laudati, OptoSmart s.r.l. (Italy)
Univ. of Sannio (Italy)
F. Mennella, OptoSmart s.r.l. (Italy)
M. Esposito, OptoSmart s.r.l. (Italy)
A. Cusano, OptoSmart s.r.l. (Italy)
Univ. of Sannio (Italy)
M. Giordano, OptoSmart s.r.l. (Italy)
Institute for Composite and Biomedical Materials, CNR (Italy)
G. Breglio, OptoSmart s.r.l. (Italy)
Univ. of Napoli Federico II (Italy)
S. Sorge, D'Appolonia s.p.a. (Italy)
C. Calisti Tassini, D'Appolonia s.p.a. (Italy)
A. Torre, D'Appolonia s.p.a. (Italy)
G. D'Altrui, D'Appolonia s.p.a. (Italy)
A. Cutolo, OptoSmart s.r.l. (Italy)
Univ. of Sannio (Italy)

Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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