Millimetric spatial resolution time-expanded Φ-OTDR
Authors
Soriano Amat, Miguel; Guay, Philippe; Fidalgo Martins, Hugo; Martín López, Sonia; González Herráez, Miguel; [et al.]Identifiers
Permanent link (URI): http://hdl.handle.net/10017/61005DOI: 10.1063/5.0150991
ISSN: 2378-0967
Publisher
AIP Publishing
Date
2023-10-24Funders
Comunidad de Madrid
Ministerio de Ciencia e Innovación
Agencia Estatal de Investigación
European Commission
Bibliographic citation
Soriano Amat, M., Guay, P., Fidalgo Martins, H., Martín López, S., González Herráez, M., Fernández Ruiz, M.R. & Genest, J. 2023, “Millimetric spatial resolution time-expanded Φ-OTDR”, APL Photonics, vol. 8, no. 10, pp 1-8.
Project
info:eu-repo/grantAgreement/CAM//S2018%2FNMT4326/ES/SENSORES E INSTRUMENTACION EN TECNOLOGIAS FOTONICAS2/SINFOTON2
info:eu-repo/grantAgreement/MICINN//PLEC2021-007875/ES/SISTEMA DE MONITORIZACION PARA LA PROTECCION Y MANTENIMIENTO PREDICTIVO DE INFRAESTRUCTURAS DE CABLE SUBMARINO/PSI
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/CPP2021-008869/ES/TECNOLOGIAS FOTONICAS MAS RENTABLES PARA LA MONITORIZACION REMOTA DE LA SISMICIDAD EN ALMACENES GEOLOGICOS DE ZONAS MARINAS PARA LA TRANSICION ENERGETICA/TREMORS
info:eu-repo/grantAgreement/MICINN/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2021-128000OB-C21
info:eu-repo/grantAgreement/MICINN/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2021-128000OB-C22
info:eu-repo/grantAgreement/EC/HE/101098992/EU/Tsunami early warning System using Availableseafloor Fiber cablEs/SAFE
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
https://doi.org/10.1063/5.0150991Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
© 2023 The authors
Access rights
info:eu-repo/semantics/openAccess
Abstract
Time-expanded phase-sensitive optical time-domain reflectometry is a distributed optical fiber sensing technology based on dual-frequency combs that allows for dynamic and high spatial resolution measurements while maintaining reduced detection requirements. Since the formalization of the technique, different experimental schemes have been satisfactorily tested, with a general performance of cm-scale spatial resolution over hundreds of meters. In this article, we present an optimized scheme with enhanced energy and spectral efficiencies that allows reaching 5 mm spatial resolution. As compared to previous experimental approaches, the presented architecture is based on a free-running dual comb setup generated through pure electro-optical phase modulation. Besides, the introduction of an optical hybrid in the detection stage allows for doubling the spatial resolution while keeping the refresh rate and the sensing range unchanged.
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