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dc.creatorMariñelarena Ollacarizqueta, Jones_ES
dc.creatorUrricelqui Polvorinos, Javieres_ES
dc.creatorLoayssa Lara, Alaynes_ES
dc.date.accessioned2018-12-28T14:55:10Z
dc.date.available2018-12-28T14:55:10Z
dc.date.issued2017
dc.identifier.issn1943-0655 (Print)||1943-0655(Electronic)
dc.identifier.urihttps://hdl.handle.net/2454/31910
dc.description.abstractWe present two techniques that provide an extension of the dynamic range of coherent Brillouin optical time-domain analysis (BOTDA) sensors for dynamic measurements. This type of BOTDA sensors rely on self-heterodyne detection of a phase-modulated probe wave and the dynamic range for fast measurements is limited to the linear region of the RF phase-shift spectrum measured. The first method for range extension that we introduce is based on launching pump pulses containing multiple frequency components. This makes the Brillouin spectra generated by each component to overlap, providing a wider linear region of the detected RF phase-shift spectrum and allowing to measure larger Brillouin frequency shift variations. The second method relies on shortening the length of the pump pulses, which leads to the broadening of the detected RF spectra. The theoretical fundamentals of both range enhancing techniques are presented. Moreover, we experimentally demonstrate that they provide a threefold to fourfold enhancement in the dynamic range. Finally, the factors limiting their performance are determined: for the multi-frequency pump pulse technique, it is the worsening of Kerr non-linear effects due to the simultaneous propagation of multiple spectral components in the fiber, and, for the pulse-shortening method, it is the signal-to-noise ratio penalty linked to the reduction of the magnitude of the Brillouin interaction.en
dc.description.sponsorshipThis work was supported in part by the Universidad Pública de Navarra, in part by the Feder funds, and in part by the Spanish Ministerio de Economía y Competitividad through Project TEC2013-47264-C2-2-R and Project TEC2016-76021-C2-1-R.en
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherIEEEen
dc.relation.ispartofIEEE Photonics Journal, vol. 9, number 3, june 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.en
dc.subjectBrillouin scatteringen
dc.subjectDistributed optic fiber sensoren
dc.subjectDynamic sensoren
dc.titleEnhancement of the dynamic range in slope-assisted coherent brillouin optical time-domain analysis sensorsen
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 Ingeniaritza Sailaeu
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.identifier.doi10.1109/JPHOT.2017.2701203
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/10.1109/JPHOT.2017.2701203
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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