High visibility phase-sensitive optical time domain reflectometer for distributed sensing of ultrasonic waves
Autores
Fidalgo Martins, Hugo; Martín López, Sonia; Corredera, Pedro; Filograno, M. L.; Frazão, O.; [et al.]Identificadores
Enlace permanente (URI): http://hdl.handle.net/10017/26499DOI: 10.1117/12.2026081
ISSN: 0277-786X
ISBN: 9780819496348
Editor
Society of Photo-optical Instrumentation Engineers (SPIE)
Fecha de publicación
2013-05-19Patrocinadores
Ministerio de Economía y Competitividad
Comunidad de Madrid
European Commission
Cita bibliográfica
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87943F.
Palabras clave
Phase-sensitive OTDR
Distributed sensor
Optical fiber sensors
Vibration measurements
Descripción
5th European Workshop on Optical Fibre Sensors, Krakow, Poland, (5th EWOFS'2013) 19-22 May, 2013.
Proyectos
info:eu-repo/grantAgreement/EC/Interreg Sudoe/SOE3%2FP2%2FP714/EU/Gestión ecológica de pilas de residuos de carbón en combustión/ECOAL-MGT
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/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
Tipo de documento
info:eu-repo/semantics/conferenceObject
Versión
info:eu-repo/semantics/acceptedVersion
Versión del editor
http://dx.doi.org/10.1117/12.2026081Derechos
Atribución-NoComercial-SinDerivadas 3.0 España
(c) 2013 Society of Photo Optical Instrumentation Engineers
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
In structural health monitoring, the propagation of ultrasonic waves along a structure can reveal interesting data relevant to the integrity of the whole structure. The availability of a system for distributed sensing of ultrasonic waves could, in some cases (e.g. pipelines) provide extremely valuable information to civil engineers. Phase-sensitive optical time domain reflectometry (ΦOTDR) is a simple and effective tool allowing the distributed monitoring of vibrations along single-mode fibers. Up to now, ΦOTDRs have been used mostly for the measurement of sub-kHz vibrations. In this work, the authors present an experimental characterization of a high-visibility ΦOTDR and its performance when used for ultrasonic vibration measurements. The sensor was able to measure vibrations of up to 39.5 kHz with a resolution of 5 m over a range which could go up to 1.25 km. This is the first time to our knowledge that a ΦOTDR is demonstrated for distributed measurement of ultrasonic waves.
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