151213 20251017144635.0 doi 10.5220/0007386401960200 sideral 134154 ART-2019-134154 eng Sanahuja, David Universidad de Zaragoza (orcid)0000-0002-2660-5652 Long-range (>100km) distributed vibration sensor based on F-OTDR technique with spread amplification and detection of probe pulses 2019 This paper presents a set of results to demonstrate a long-range (>100km) distributed vibration sensor (DAS) based on the Coherent Optical Time Domain Reflectometry (Φ-OTDR) technique using distributed amplification of the probe pulses and detection of the backscattered traces, which demonstrates great capability to achieve long-range distances with great sensitivity. In this case, optical amplifiers have been placed along the sensing optical fiber, each one followed by a detection stage. Results for some traces detected in each of the spans along the sensing fiber, and some measurements of stimuli produced by a vibration at the end of each of the sections of the sensing fiber, are showed here. This work, framed in the project SACOH (Long-range Distributed Vibration Sensing by Coherent Rayleigh Backscattering), has been carried out in collaboration between the University of Zaragoza and the company APL (Aragón Photonics Labs). info:eu-repo/grantAgreement/ES/MINECO/RTC-2016-5212-8 info:eu-repo/semantics/closedAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion Preciado, Javier (orcid)0000-0001-5898-8777 Subías, Jesús Universidad de Zaragoza (orcid)0000-0002-2244-170X Heras, Carlos Universidad de Zaragoza (orcid)0000-0001-5608-8679 Hidalgo, Lucía Universidad de Zaragoza Salinas, Iñigo Universidad de Zaragoza (orcid)0000-0002-6144-7928 Sevillano, Pascual Universidad de Zaragoza (orcid)0000-0002-4094-3826 Martínez, Juan Villafranca, Asier 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 5008 800 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Teoría Señal y Comunicac. 7, 1 (2019), 196-200 Photoptics (Setúbal) 2184-352X 813962 http://zaguan.unizar.es/record/151213/files/texto_completo.pdf Versión publicada 2545295 http://zaguan.unizar.es/record/151213/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151213 articulos driver 2025-10-17-14:29:03 ARTICLE