Sources of noise in Brillouin optical time-domain analyzers

Javier Urricelqui; Marcelo A. Soto; Luc Thévenaz

doi:10.1117/12.2195298

28 September 2015 Sources of noise in Brillouin optical time-domain analyzers

Javier Urricelqui, Marcelo A. Soto, Luc Thévenaz

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963434 (2015) https://doi.org/10.1117/12.2195298
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

This paper presents a thorough study of the different sources of noise affecting Brillouin optical time-domain analyzers (BOTDA), providing a deep insight into the understanding of the fundamental limitations of this kind of sensors. Analytical and experimental results indicate that the noise source ultimately fixing the sensor performance depends basically on the fiber length and the input pump-probe powers. Thus, while the phase-to-intensity noise conversion induced by stimulated Brillouin scattering can have a dominating effect at short distances, a combination of sources determines the noise in longrange sensing, basically dominated by probe double Rayleigh scattering.

Citation Download Citation

Javier Urricelqui, Marcelo A. Soto, and Luc Thévenaz "Sources of noise in Brillouin optical time-domain analyzers", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963434 (28 September 2015); https://doi.org/10.1117/12.2195298

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