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Overcoming non-local effects and Brillouin threshold limitations in Brillouin distributed sensors


Abstract: We demonstrate, for the first time to our knowledge, a Brillouin optical time domain analysis sensor that is able to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber and that is free from detrimental non-local effects. The technique is based on a dual-probe-sideband setup in which a frequency modulation of the probes waves along the fiber is introduced. This makes the frequency of maximum interaction between pump and probes to vary along the fiber, thus mitigating the pump pulse depletion and making it possible to use very large probe power, which brings an improved signal-to-noise ratio in detection.



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 Autoría: Urricelqui J., Ruiz-Lombera R., Sagues M., Mirapeix J., López-Higuera J., Loayssa A.,

 Congreso: International Conference on Optical Fibre Sensors: OFS (24ª : 2015 : Curitiba, Brasil)

Editorial: SPIE Society of Photo-Optical Instrumentation Engineers

 Año de publicación: 2015

Nº de páginas: 4

Tipo de publicación: Comunicación a Congreso

DOI: 10.1117/12.2205448

ISSN: 0277-786X,1996-756X

Url de la publicación: http://dx.doi.org/10.1117/12.2205448

Autores/as

URRICELQUI POLVORINOS, JAVIER

RUBEN RUIZ LOMBERA

SAGUES GARCÍA, MIGUEL

ALAYN LOAYSSA LARA