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dc.creatorMompó Roselló, Juan Josées_ES
dc.creatorIribas Pardo, Haritzes_ES
dc.creatorUrricelqui Polvorinos, Javieres_ES
dc.creatorLoayssa Lara, Alaynes_ES
dc.date.accessioned2019-04-15T13:45:00Z
dc.date.available2019-04-15T13:45:00Z
dc.date.issued2017
dc.identifier.citationJ. J. Mompó, H. Iribas, J. Urricelqui and A. Loayssa, "Second-Order Nonlocal Effects Mitigation in Brillouin Optical Time-Domain Analysis Sensors by Tracking the Brillouin Frequency Shift Profile of the Fiber," in IEEE Photonics Journal, vol. 9, no. 5, pp. 1-12, Oct. 2017, Art no. 6804312. doi: 10.1109/JPHOT.2017.2748965en
dc.identifier.issn1943-0655
dc.identifier.urihttps://hdl.handle.net/2454/32901
dc.description.abstractWe report on an additional limitation that has been found in Brillouin optical time-domain analysis (BOTDA) sensors due to the so-called second-order nonlocal effects (NLE). Second-order NLE appear in BOTDA setups that deploy a double probe waves to compensate the transfer of energy between the pump pulse and the probe wave, and are related to a spectral distortion of the pump pulse that leads to measurement errors and an effective limit on the maximum probe power that can be deployed in the sensor. We theoretically and experimentally demonstrate that the techniques that have been presented so far in the literature to compensate second-order NLE are only effective in the case that the Brillouin frequency shift (BFS) along the sensing fiber is uniform. However, this requirement for uniformity is not realistic in real world scenarios in which a variety of fibers with different BFS and subjected to different environmental conditions are typically deployed. Therefore, we demonstrate a new method to mitigate the effects of BFS variation in the BOTDA setups that compensate second-order NLE. This method is based on introducing an additional wavelength modulation to the probe wave so as to track the mean BFS changes along the sensing fiber link. With this method, we demonstrate a BOTDA setup that, without coding, distributed amplification, or any other form of performance enhancement, achieves a sensing length of 120 km with 3-m spatial resolution and 2-MHz measurement precision. Moreover, the setup demonstrates, to our knowledge, the largest probe power ever injected in a BOTDA sensing link.en
dc.description.sponsorshipThis work was supported by the Universidad Pública de Navarra, Feder funds and Spanish Ministerio de Economía y Competitividad through the project TEC2013-47264-C2-2-R and TEC2016-76021-C2-1-R.en
dc.format.extent13 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherIEEEen
dc.relation.ispartofIEEE Photonics Journal, volume 9, no. 5, October 2017en
dc.rights© 2017 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.en
dc.subjectBrillouin distributed sensorsen
dc.subjectFiber optics sensorsen
dc.subjectBrillouin optical time domain analysisen
dc.titleSecond-order nonlocal effects mitigation in Brillouin optical time-domain analysis sensors by tracking the Brillouin frequency shift profile of the fiberen
dc.typeArtículo / Artikuluaes
dc.typeinfo:eu-repo/semantics/articleen
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónicaes_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Sailaeu
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.identifier.doi10.1109/JPHOT.2017.2748965
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/TEC2013-47264en
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/TEC2016-76021en
dc.relation.publisherversionhttps://doi.org/10.1109/JPHOT.2017.2748965
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernuaes


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