Dr. Javier Urricelqui Profile

Dr. Javier Urricelqui

at Univ Pública de Navarra

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Proceedings Article | 1 March 2019 Paper

Latest research on long-range Brillouin distributed sensing

Alayn Loayssa, Javier Urricelqui, Haritz Iribas, Jon Mariñelarena, Juan José Mompó

Proceedings Volume 10934, 109340K (2019) https://doi.org/10.1117/12.2515598

KEYWORDS: Sensors, Sensor performance, Fiber optics sensors

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We review the latest developments in long-range Brillouin optical time-domain analysis sensors. The factors that impair the performance of these sensors, particularly in terms of their distance range, are discussed together with the latest methods to overcome them. We focus on our recent contributions based on the application of the probe dithering method, which is based on introducing a wavelength modulation to the probe wave. This technique is shown to effectively compensate nonlocal effects originated in the depletion of the pump pulse as well as of its pedestal. In addition, it can provide amplification to the pump wave with a slight modification of the setup. Furthermore, this method can be combined with pump pulse coding and a new technique for coding linearization that we have devised to further extend the sensing length into the hundreds of kilometers range.

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