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Proceedings Paper

Advances in subsurface water-content measurement with a distributed Brillouin scattering fibre-optic sensor
Author(s): Sylvain Texier; Sibel Pamukcu; Jean Toulouse
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Paper Abstract

This paper reports on the design of a novel optical sensor for distributed measurement of water-content at discrete positions along a single fibre length embedded in low permeability media. Sensing is based on the characteristics of Brillouin scattering in optical fibres coupled with the characteristics of hydrophilic polymers used as transducers. Experiments with a water sensor prototype have demonstrated measurement of water-content up to 30%.Measured losses on the system indicate that mounting of hundreds of sensors over several kilometres of fibre is possible. Experiments involving swelling and drying of the polymers showed that the water-content measurements with the fibre-based sensor are fully reversible.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624258
Show Author Affiliations
Sylvain Texier, Lehigh Univ. (United States)
Sibel Pamukcu, Lehigh Univ. (United States)
Jean Toulouse, Lehigh Univ. (United States)

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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