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Proceedings Paper

Overcoming non-local effects and Brillouin threshold limitations in Brillouin distributed sensors
Author(s): Javier Urricelqui; Rubén Ruiz-Lombera; Mikel Sagues; Jesús Mirapeix; José M. López-Higuera; Alayn Loayssa
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Paper 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.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963487 (28 September 2015); doi: 10.1117/12.2205448
Show Author Affiliations
Javier Urricelqui, Univ. Pública de Navarra (Spain)
Rubén Ruiz-Lombera, Univ. de Cantabria (Spain)
Mikel Sagues, Univ. Pública de Navarra (Spain)
Jesús Mirapeix, Univ. de Cantabria (Spain)
José M. López-Higuera, Univ. de Cantabria (Spain)
Alayn Loayssa, Univ. Pública de Navarra (Spain)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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