Gain vs phase in BOTDA setups

Authors
López Gil, Alexia InésUniversity of Alcalá Author; Angulo Vinuesa, XabierUniversity of Alcalá Author; Soto Hernández, Marcelo AlfonsoUniversity of Alcalá Author; Domínguez López, AlejandroUniversity of Alcalá Author; Martín López, SoniaUniversity of Alcalá Author; [et al.]
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/27697
DOI: 10.1117/12.2236890
ISSN: 0277-786X
ISBN: 978-1-51060-219-9
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Date
2016-05-31
Affiliation
Universidad de Alcalá. Departamento de Electrónica
Funders
Ministerio de Economía y Competitividad
Comunidad de Madrid
European Commission
Universidad de Alcalá
Bibliographic citation
Alexia Lopez-Gil ; Xabier Angulo-Vinuesa ; Marcelo A. Soto ; Alejandro Dominguez-Lopez ; Sonia Martin-Lopez ; Luc Thévenaz ; Miguel Gonzalez-Herraez; "Gain vs phase in BOTDA setups". Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991631 (May 30, 2016).
Keywords
Fiber optics
Fiber optics sensors
Nonlinear optics
Stimulated Brillouin scattering
Project
info:eu-repo/grantAgreement/EC/FP7/307441/EU/U-FINE
info:eu-repo/grantAgreement/MINECO//TEC2012-37958-C02-01/ES/TECNOLOGIAS DE SEGURIDAD CIVIL BASADAS EN FIBRA OPTICA/
info:eu-repo/grantAgreement/MINECO//TEC2013-45265-R/ES/DETECCION TEMPRANA DE AMENAZAS PARA INFRAESTRUCTURAS CRITICAS USANDO SISTEMAS DISTRIBUIDOS DE FIBRA OPTICA/
info:eu-repo/grantAgreement/UAH//CCG2014%2FEXP-072
info:eu-repo/grantAgreement/CAM//S2009%2FMIT2790/ES/Sensores e INstrumentación en tecnologías FOTÓNicas/SINFOTON
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1117/12.2236890
Access rights
info:eu-repo/semantics/openAccess
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Abstract
We evaluate the Brillouin frequency shift (BFS) determination error when using the Brillouin phase spectrum (BPS) instead of the Brillouin gain spectrum (BGS) in BOTDA setups. We compare the error obtained in the BFS determination in both cases, both with theoretical arguments and experimental data. In comparison to the gain, for an equal SNR and linewidth, the phase generally provides a better fit of the BFS for smaller frequency spans. This result opens a possible way to reduce the measurement time of certain BOTDA systems by using the phase feature
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