SNR enhancement in high-resolution phasesensitive OTDR systems using chirped pulse amplification concepts
Autores
Pastor Graells, Juan; Romero Cortés, Luis; Fernández Ruiz, María del Rosario; Fidalgo Martins, Hugo; Azaña, José; [et al.]Identificadores
Enlace permanente (URI): http://hdl.handle.net/10017/29272DOI: 10.1364/OL.42.001728
ISSN: 0146-9592
Editor
Optical Society of America (OSA)
Fecha de publicación
2017-05-01Fecha fin de embargo
2017-11-01Patrocinadores
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Cita bibliográfica
Pastor-Graells, J., Romero Cortés, L., Fernández-Ruiz, M.R., Martins, H.F., Azaña, J., Martin-Lopez, S., González-Herráez, M. SNR enhancement in high-resolution phase-sensitive OTDR systems using chirped pulse amplification concepts (2017) Optics Letters, 42(9), pp. 1728-1731.
Palabras clave
Fiber optics sensors
Optical time domain reflectometry
Chirping
Pulse compression
Proyectos
info:eu-repo/grantAgreement/EC/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
info:eu-repo/grantAgreement/EC/FP7/608099/EU/Allied Initiative for Training and Education in Coherent Optical Networks/ICONE
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/MINECO//TEC2015-71127-C2-2-R/ES/REDUCCION DE LOS EFECTOS DE RUIDO EN SISTEMAS DE FIBRA OPTICA NO LINEALES/
info:eu-repo/grantAgreement/EC/H2020/WaterJPI-JC-2015-04/EU/Dikes and Debris Flows Monitoring by Novel Optical Fiber Sensors/DOMINO
info:eu-repo/grantAgreement/EC/H2020/722509/EU/Fibre Nervous Sensing Systems/FINESSE
info:eu-repo/grantAgreement/CAM//S2009%2FMIT2790/ES/Sensores e INstrumentación en tecnologías FOTÓNicas/SINFOTON
Tipo de documento
info:eu-repo/semantics/article
Versión
info:eu-repo/semantics/acceptedVersion
Versión del editor
https://doi.org/10.1364/OL.42.001728Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
Phase-sensitive optical time-domain reflectometry
(φOTDR) is widely used for the distributed detection of
mechanical or environmental variations with resolutions
of typically a few meters. The spatial resolution of these
distributed sensors is related to the temporal width of
the input probe pulses. However, the input pulse width
cannot be arbitrarily reduced (to improve the resolution),
since a minimum pulse energy is required to achieve a good
level of signal-to-noise ratio (SNR), and the pulse peak
power is limited by the advent of nonlinear effects. In this
Letter, inspired by chirped pulse amplification concepts, we
present a novel technique that allows us to increase the SNR
by several orders of magnitude in φOTDR-based sensors
while reaching spatial resolutions in the centimeter range.
In particular, we report an SNR increase of 20 dB over the
traditional architecture, which is able to detect strain events
with a spatial resolution of 1.8 cm.
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