Time-expanded phase-sensitive optical time-domain reflectometry
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Otros documentos de la autoría: Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Costa, Luís; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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comunitat-uji-handle3:10234/43643
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INVESTIGACIONMetadatos
Título
Time-expanded phase-sensitive optical time-domain reflectometryAutoría
Fecha de publicación
2021-03-09Editor
Light: Science & ApplicationsISSN
2047-7538Cita bibliográfica
Soriano-Amat, M., Martins, H.F., Durán, V. et al. Time-expanded phase-sensitive optical time-domain reflectometry. Light Sci Appl 10, 51 (2021). https://doi.org/10.1038/s41377-021-00490-0Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.nature.com/articles/s41377-021-00490-0Versión
info:eu-repo/semantics/publishedVersionResumen
Phase-sensitive optical time-domain reflectometry (ΦOTDR) is a well-established technique that provides spatio-temporal measurements of an environmental variable in real time. This unique capability is being leveraged ... [+]
Phase-sensitive optical time-domain reflectometry (ΦOTDR) is a well-established technique that provides spatio-temporal measurements of an environmental variable in real time. This unique capability is being leveraged in an ever-increasing number of applications, from energy transportation or civil security to seismology. To date, a wide number of different approaches have been implemented, providing a plethora of options in terms of performance (resolution, acquisition bandwidth, sensitivity or range). However, to achieve high spatial resolutions, detection bandwidths in the GHz range are typically required, substantially increasing the system cost and complexity. Here, we present a novel ΦOTDR approach that allows a customized time expansion of the received optical traces. Hence, the presented technique reaches cm-scale spatial resolutions over 1 km while requiring a remarkably low detection bandwidth in the MHz regime. This approach relies on the use of dual-comb spectrometry to interrogate the fibre and sample the backscattered light. Random phase-spectral coding is applied to the employed combs to maximize the signal-to-noise ratio of the sensing scheme. A comparison of the proposed method with alternative approaches aimed at similar operation features is provided, along with a thorough analysis of the new trade-offs. Our results demonstrate a radically novel high-resolution ΦOTDR scheme, which could promote new applications in metrology, borehole monitoring or aerospace. [-]
Publicado en
Light: Science & Applications, vol. 10 (2021)Entidad financiadora
Comunidad de Madrid | FEDER Program | Generalitat Valenciana | European Research Council | Spanish Government | Universitat Jaume I
Código del proyecto o subvención
SINFOTON2-CM: P2018/NMT-432 | PROMETEO/2020/029 | OCEAN-DAS: ERC-2019-POC-875302 | RTI2018–097957-B-C31, RTI2018–097957-B-C32, RTI2018–097957-B-C33 | UJI-B2019–45
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info:eu-repo/semantics/openAccess
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