%0 Journal Article 
%A López Gil, Alexia Inés
%A Domínguez López, Alejandro
%A Martín López, Sonia
%A González Herráez, Miguel
%T Simple Method for the Elimination of Polarization Noise in BOTDA Using Balanced Detection and Orthogonal Probe Sidebands
%D 2015
%@ 0733-8724
%U http://hdl.handle.net/10017/25099
%X Polarization noise arises in Brillouin optical timedomain
analysis due to the strong polarization sensitivity of stimulated
Brillouin scattering. To avoid this noise, it turns out to be
indispensable to perform some kind of polarization scrambling,
either in the pump pulse, the probe signal or both. This is usually
achieved using polarization scrambling/switching systems, which,
being mechanical, tend to be not as robust as it would be desirable.
In this paper, we propose a completely passive system,with no moving
parts, to eliminate polarization noise in a BOTDA. It is based
on the use of passive depolarization of the pump pulse together
with balanced detection among orthogonally polarized Stokes and
anti-Stokes bands of the probe signal. The setup requires no alignment
readjustment over time and provides a performance similar
to a conventional BOTDA using scrambler.
%K Balanced detection
%K Brillouin scattering
%K Distributed optic fiber sensor
%K Polarization noise
%K Temperature sensor
%K Ciencias tecnológicas
%K Electrónica
%K Technology
%K Electronics
%~ Biblioteca Universidad de Alcala