2 June 2014 Simple method for the elimination of polarization noise in BOTDA using balanced detection of orthogonally polarized Stokes and anti-Stokes probe sidebands
Author Affiliations +
Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91573U (2014) https://doi.org/10.1117/12.2059522
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
Given the strong polarization sensitivity of Stimulated Brillouin Scattering (SBS), in Brillouin Optical Time Domain Analysis (BOTDA) it turns out to be indispensable to perform some kind of polarization scrambling, either in the pump pulse, or the probe signal (or both). This is usually accomplished 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 perform the polarization scrambling in a BOTDA. It is based on the use of balanced detection among the orthogonally polarized Stokes and anti-Stokes bands of the probe signal. The setup requires no alignment and provides a performance similar to a conventional BOTDA sensor.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexia López-Gil, Alexia López-Gil, Alejandro Domínguez-López, Alejandro Domínguez-López, Sonia Martín-López, Sonia Martín-López, Miguel González-Herráez, Miguel González-Herráez, } "Simple method for the elimination of polarization noise in BOTDA using balanced detection of orthogonally polarized Stokes and anti-Stokes probe sidebands", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91573U (2 June 2014); doi: 10.1117/12.2059522; https://doi.org/10.1117/12.2059522
PROCEEDINGS
4 PAGES


SHARE
Back to Top