%0 Journal Article 
%A Soto Hernández, Marcelo Alfonso
%A López Gil, Alexia Inés
%A González Herráez, Miguel
%A Thévenaz, Luc
%T Polarisation pulling in Brillouin optical time-domain analysers
%D 2017
%@ 0277-786X
%U http://hdl.handle.net/10017/30888
%X The impact of Brillouin scattering on the polarisation of pump and probe in a Brillouin optical-time domain analyser is investigated. Experimental results indicate that the Brillouin interaction integrated along the entire sensing fibre produces a polarisation pulling force that changes the pump polarisation. Although this force can be compensated to first order by dual-sideband probes, the Brillouin gain/loss experienced by probe bands induce a net pulling that leads to uncompensated polarisation fading and reduced signal-to-noise ratio. While the use of two simultaneous orthogonally-polarised probes alleviates fading issues, spectral distortions originate from the coupling between Brillouin gain and polarisation pulling.
%K Distributed fibre sensor
%K Optical fibre sensor
%K Polarisation
%K Stimulated Brillouin scattering
%K Ciencias tecnológicas
%K Electrónica
%K Technology
%K Electronics
%~ Biblioteca Universidad de Alcala