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dc.creatorIribas Pardo, Haritzes_ES
dc.creatorUrricelqui Polvorinos, Javieres_ES
dc.creatorMompó Roselló, Juan Josées_ES
dc.creatorMariñelarena Ollacarizqueta, Jones_ES
dc.creatorLoayssa Lara, Alaynes_ES
dc.date.accessioned2017-11-15T09:28:43Z
dc.date.available2017-11-15T09:28:43Z
dc.date.issued2017
dc.identifier.issn2076-3417
dc.identifier.urihttps://hdl.handle.net/2454/26184
dc.description.abstractBrillouin optical time-domain analysis (BOTDA) sensors have great potential to provide distributed measurements of temperature and strain over large structures with high spatial resolution and measurement precision. However, their performance ultimately depends on the amount of probe and pump pulse power that can be injected into the sensing fiber, which determines the signal-to-noise ratio of the detected measurement signal. The probe wave power is constrained by the generation of noise induced by spontaneous Brillouin scattering and at lower power by the so-called non-local effects. In this work, we focus on the latter. We review the physical origins of non-local effects and analyze the performance impairments that they bring. In addition, we discuss the different methods that have been proposed to counteract these effects comparing their relative merits and ultimate performance. Particularly, we focus on a technique that we have devised to compensate non-local effects which is based on introducing an optical frequency modulation or dithering to the probe wave. This method is shown to provide a comprehensive solution to most of the impairments associated with non-local effects and also to enable some side benefits, such as amplification of the pump pulses to compensate the attenuation of the fiber.en
dc.description.sponsorshipThe authors wish to acknowledge the financial support of the Spanish Ministerio de Economía y Competitividad through the projects TEC2013-47264-C2-2-R and TEC2016- 76021-C2-1-R, FEDER funds and the Universidad Pública de Navarra.en
dc.format.extent12 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherMDPIen
dc.relation.ispartofApplied sciences 2017, 7(8), 761en
dc.rights© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectStimulated Brillouin scatteringen
dc.subjectBrillouin optical time-domain analysisen
dc.subjectNon-local effectsen
dc.titleNon-local effects in Brillouin optical time-domain analysis sensorsen
dc.typeArtículo / Artikuluaes
dc.typeinfo:eu-repo/semantics/articleen
dc.contributor.departmentISC - Institute of Smart Citiesen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.identifier.doi10.3390/app7080761
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/TEC2013-47264
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/TEC2016-76021
dc.relation.publisherversionhttps://dx.doi.org/10.3390/app7080761
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes


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© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
La licencia del ítem se describe como © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.