000149862 001__ 149862
000149862 005__ 20250130163246.0
000149862 0247_ $$2doi$$a10.1109/JSEN.2021.3125921
000149862 0248_ $$2sideral$$a125439
000149862 037__ $$aART-2021-125439
000149862 041__ $$aeng
000149862 100__ $$0(orcid)0000-0001-5898-8777$$aPreciado, Javier
000149862 245__ $$aRange and bandwidth extension in Direct-detection C-OTDR using optical repeaters
000149862 260__ $$c2021
000149862 5203_ $$aSensing range and response bandwidth are the main parameters that define the performance of distributed optical fiber sensors. In this work, a novel scheme based on the use of in-line optical repeaters is proposed to extend the sensing range of distributed acoustic sensors (DAS) based in direct-detection coherent optical time-domain reflectometry (DD C-OTDR). The proposed regenerators comprise three different stages that reamplify the incoming pulse amplitude, synchronize the acquisition using the incoming pulse and also detect the backscattered signal from the next span. With repeaters placed every 40 km along a fiber under test (FUT), we have achieved a total sensing range above 120 km while keeping a pulse frequency of 2.5 kHz (1.25 kHz bandwidth). At the end of each segment of the FUT we experimentally demonstrate the correct measurement of a 15 ne stimulus, with and an average degradation lower than 3 dB per fiber span. The experimental results show that an extension of the sensing range in DD C-OTDR can be achieved without reducing the frequency response bandwidth or increasing the scheme complexity.
000149862 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/DI-17-09169$$9info:eu-repo/grantAgreement/ES/MINECO/RTC-2016-5212-8
000149862 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000149862 590__ $$a4.325$$b2021
000149862 591__ $$aINSTRUMENTS & INSTRUMENTATION$$b14 / 64 = 0.219$$c2021$$dQ1$$eT1
000149862 591__ $$aPHYSICS, APPLIED$$b47 / 161 = 0.292$$c2021$$dQ2$$eT1
000149862 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b83 / 274 = 0.303$$c2021$$dQ2$$eT1
000149862 592__ $$a0.926$$b2021
000149862 593__ $$aInstrumentation$$c2021$$dQ1
000149862 593__ $$aElectrical and Electronic Engineering$$c2021$$dQ1
000149862 594__ $$a6.1$$b2021
000149862 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000149862 700__ $$0(orcid)0000-0002-4094-3826$$aSevillano, Pascual$$uUniversidad de Zaragoza
000149862 700__ $$0(orcid)0000-0001-5608-8679$$aHeras, Carlos$$uUniversidad de Zaragoza
000149862 700__ $$0(orcid)0000-0002-2244-170X$$aSubias, Jesus$$uUniversidad de Zaragoza
000149862 700__ $$0(orcid)0000-0002-2660-5652$$aSanahuja, David$$uUniversidad de Zaragoza
000149862 700__ $$0(orcid)0000-0002-9413-0265$$aCarretero, Enrique$$uUniversidad de Zaragoza
000149862 700__ $$aMartinez, Juan José
000149862 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada
000149862 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Teoría Señal y Comunicac.
000149862 773__ $$g21, 24 (2021), 27526-27531$$pIEEE sens. j.$$tIEEE SENSORS JOURNAL$$x1530-437X
000149862 8564_ $$s1411629$$uhttps://zaguan.unizar.es/record/149862/files/texto_completo.pdf$$yVersión publicada
000149862 8564_ $$s3396068$$uhttps://zaguan.unizar.es/record/149862/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000149862 909CO $$ooai:zaguan.unizar.es:149862$$particulos$$pdriver
000149862 951__ $$a2025-01-30-16:31:15
000149862 980__ $$aARTICLE