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Proceedings Paper

Demodulation of serial fibre Bragg grating sensor arrays by Fourier transform spectroscopy using an over-moded laser reference
Author(s): Kieran T. O'Mahoney; Donal A. Flavin; Lin Zhang; Ian Bennion
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Paper Abstract

We report a Fourier Transform Spectroscopy scheme for the simultaneous demodulation of a Bragg grating sensor array and the measurement of the intra-grating spectral structure of the individual gratings of the array, based on referencing to a transversely multimode laser. The performance for this reference, relative to that of a single-mode reference, is evaluated in the context of coherence effects, temperature sensing, and high-resolution intra-grating spectral measurement. The results indicate the potential for grating demodulation across the full spectrum of the E, S, C and L optical telecommunications bands.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623281
Show Author Affiliations
Kieran T. O'Mahoney, Waterford Institute of Technology (Ireland)
Donal A. Flavin, Waterford Institute of Technology (Ireland)
Lin Zhang, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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