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Proceedings Paper

Criterion for sub-pulse-length resolution and minimum frequency shift in distributed Brillouin sensors
Author(s): Fabien Ravet; Xiaoyi Bao; Liang Chen
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Paper Abstract

We introduce a Rayleigh Equivalent Criterion that unambiguously discriminates a stressed section which is smaller than the spatial resolution of a Distributed Brillouin Sensor. Under this criterion for the worst-case of any given sensing length, the minimum resolvable strain length is 0.50 the pulse length (w) with Brillouin frequency uncertainty of 15% or 0.85w with 2% frequency uncertainty which is smaller than the pulse length.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624226
Show Author Affiliations
Fabien Ravet, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)
Liang Chen, Univ. of Ottawa (Canada)

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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