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Proceedings Paper

Experimental tests of a new multiplexing technique for fibre optical Bragg sensors array
Author(s): Giovanni Breglio; A. Cusano; Andrea Irace
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Paper Abstract

In our previous papers we have introduced the Chirped-Pulsed Frequency Modulation technique (C-PFM); it has been used to allow the multiplexing capability of a multipoint Fiber Bragg Grating (FBG) sensor network. In this paper we report some preliminary experimental results, which confirm the theoretical analyses previously obtained. The innovative multiplexing approach, without to increase the complexity of the acquisition system, is able to address up to 10 independent sensing points on a single fiber. The C-PFM technique is based on the amplitude modulation of the emitted signal (pulsed) from the laser source by a chirped frequency signal and on the demodulation of the reflected signal by means of an adaptive filter (that is only a numerical elaboration). The experimental result are here shown and commented in order to define limitations and capabilities of the approach.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566669
Show Author Affiliations
Giovanni Breglio, Second Univ. of Naples (Italy)
A. Cusano, Univ. of Sannio (Italy)
Andrea Irace, Second Univ. of Naples (Italy)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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