118224 20240319081024.0 doi 10.1109/LPT.2022.3181819 sideral 129668 ART-2022-129668 eng Preciado Garbayo, J. (orcid)0000-0001-5898-8777 Time-Expanded F-OTDR based on binary sequences 2022 Access copy available to the general public Unrestricted In this paper, the capabilities of time-expanded phase-sensitive optical time-domain reflectometry (TE F-OTDR) using binary sequences are demonstrated. We present a highly flexible and integrable TE F-OTDR approach that allows a customized distributed optical fiber sensor (range, spatial resolution, and acoustic sampling) by simply changing the length of the binary sequence and the reference clock frequencies of the binary sequence generators. The here presented architecture eliminates the need for the cumbersome arbitrary signal generators used to date to create the dual-comb spectra for interrogating the fiber. In this approach, the use of large binary sequences allows us to obtain dual combs in a simple and cost-effective way. Spatial resolution of ~1 cm is achieved, attaining ~15, 000 independent measurements points along the interrogated fiber, with a capability of sensing ~30, 000 measurements points. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.6 2022 ENGINEERING, ELECTRICAL & ELECTRONIC 145 / 274 = 0.529 2022 Q3 T2 PHYSICS, APPLIED 84 / 160 = 0.525 2022 Q3 T2 OPTICS 51 / 99 = 0.515 2022 Q3 T2 0.776 2022 Atomic and Molecular Physics, and Optics 2022 Q2 Electronic, Optical and Magnetic Materials 2022 Q2 Electrical and Electronic Engineering 2022 Q2 5.4 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Soriano Amat, M. Sevillano, P. Universidad de Zaragoza (orcid)0000-0002-4094-3826 Izquierdo, D. Universidad de Zaragoza (orcid)0000-0002-4746-3139 Martins, H. F. Martín López, S. Gonzalez Herraez, M. Fernández Ruiz, M. Martínez, J. J. 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 34, 13 (2022), 695-698 IEEE photonics technol. lett. IEEE Photonics Technology Letters 1041-1135 1581728 http://zaguan.unizar.es/record/118224/files/texto_completo.pdf Versión publicada 3773987 http://zaguan.unizar.es/record/118224/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118224 articulos driver 2024-03-18-16:29:22 ARTICLE