Simple method for the elimination of polarization noise in BOTDA using balanced detection of orthogonally polarized Stokes and anti-Stokes probe sidebands
Autores
López Gil, Alexia Inés; Domínguez López, Alejandro; Martín López, Sonia; González Herráez, MiguelIdentificadores
Enlace permanente (URI): http://hdl.handle.net/10017/26505DOI: 10.1117/12.2059522
ISSN: 0277-786X
ISBN: 9781628411751
Editor
Society of Photo Optical Instrumentation Engineers (SPIE)
Fecha de publicación
2014-06-02Patrocinadores
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Cita bibliográfica
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91573U (2014).
Palabras clave
Balanced detection
Brillouin Scattering
Distributed optic fiber sensor
Polarization noise
Descripción
23rd International Conference on Optical Fiber Sensors (OFS23), Santander (Cantabria), Spain, 2-6 June, 2014.
Proyectos
info:eu-repo/grantAgreement/EC/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
info:eu-repo/grantAgreement/MINECO//TEC2012-37958-C02-01/ES/TECNOLOGIAS DE SEGURIDAD CIVIL BASADAS EN FIBRA OPTICA/
info:eu-repo/grantAgreement/CAM//S2009%2FESP1781/ES//FACTOTEM2
info:eu-repo/grantAgreement/EC/Interreg Sudoe/SOE3%2FP2%2FP714/EU/Gestión ecológica de pilas de residuos de carbón en combustión/ECOAL-MGT
Tipo de documento
info:eu-repo/semantics/conferenceObject
Versión
info:eu-repo/semantics/acceptedVersion
Versión del editor
http://dx.doi.org/10.1117/12.2059522Derechos
Atribución-NoComercial-SinDerivadas 3.0 España
(c) 2014 Society of Photo Optical Instrumentation Engineers
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
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
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