Criterion for sub-pulse-length resolution and minimum frequency shift in distributed Brillouin sensors

Fabien Ravet; Xiaoyi Bao; Liang Chen

doi:10.1117/12.624226

23 May 2005 Criterion for sub-pulse-length resolution and minimum frequency shift in distributed Brillouin sensors

Fabien Ravet, Xiaoyi Bao, Liang Chen

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624226
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

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.

Citation Download Citation

Fabien Ravet, Xiaoyi Bao, and Liang Chen "Criterion for sub-pulse-length resolution and minimum frequency shift in distributed Brillouin sensors", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624226

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