%0 Journal Article 
%A López Gil, Alexia Inés
%A Angulo Vinuesa, Xabier
%A Domínguez López, Alejandro
%A Martín López, Sonia
%A González Herráez, Miguel
%T Exploiting nonreciprocity in BOTDA systems
%D 2015
%@ 0146-9592
%U http://hdl.handle.net/10017/25597
%X In this Letter, we present and demonstrate a novel technique for distributed measurements in Brillouin optical time-domain analysis based on the use of the nonlinear phase-shift induced by stimulated Brillouin scattering. Employing a Sagnac interferometer (SI), the position-resolved Brillouin phase-shift spectrum (BPS) along the fiber can be obtained, benefiting from the sensitivity to nonreciprocal phase-shifts of the SI scheme. This proposal simplifies the existing methods to retrieve the BPS distribution along an optical fiber since phase modulation, filtering, and high-bandwidth detectors are not required. The fundamentals of the technique are described theoretically and validated through numerical simulations and experimental measurements.
%K Fiber optics sensors
%K Scattering
%K Stimulated Brillouin
%K Nonlinear optics
%K Electrónica
%K Electronics
%~ Biblioteca Universidad de Alcala