Distributed optical fiber strain and temperature sensing system performances: Brillouin vs Rayleigh

A. Piccolo; S. Delepine-Lesoille; D. Leduc; Y. Lecieux

doi:10.1117/12.2539843

28 August 2019 Distributed optical fiber strain and temperature sensing system performances: Brillouin vs Rayleigh

A. Piccolo, S. Delepine-Lesoille, D. Leduc, Y. Lecieux

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111991Z (2019) https://doi.org/10.1117/12.2539843
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

Both Rayleigh and Brillouin scatterings measurements in optical fibers are able to provide distributed strain and temperature profiles. Acquisition parameters, measurement quality, impact of the environment over time, effective spatial resolution obtained on field are some of the driving specifications. We report here some studies on Brillouin and Rayleigh scattering techniques, related to their performances concerning measurement quality, distance range and spatial resolution. Even if Rayleigh-based measurements are more accurate with 6 µε uncertainty (versus 17 με), Brillouin-based methods are more reliable than Rayleigh-based on cross-correlation for strain difference over 500 με; while with the same parameters Rayleigh-based systems are able to provide a higher effective spatial resolution.

Citation Download Citation

A. Piccolo, S. Delepine-Lesoille, D. Leduc, and Y. Lecieux "Distributed optical fiber strain and temperature sensing system performances: Brillouin vs Rayleigh", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991Z (28 August 2019); https://doi.org/10.1117/12.2539843

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