Non-local effects in Brillouin optical time-domain analysis sensors

Iribas Pardo, Haritz; Urricelqui Polvorinos, Javier; Mompó Roselló, Juan José; Mariñelarena Ollacarizqueta, Jon; Loayssa Lara, Alayn

Publication:
Non-local effects in Brillouin optical time-domain analysis sensors

dc.contributor.author	Iribas Pardo, Haritz
dc.contributor.author	Urricelqui Polvorinos, Javier
dc.contributor.author	Mompó Roselló, Juan José
dc.contributor.author	Mariñelarena Ollacarizqueta, Jon
dc.contributor.author	Loayssa Lara, Alayn
dc.contributor.department	Institute of Smart Cities - ISC	en
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2017-11-15T09:28:43Z
dc.date.available	2017-11-15T09:28:43Z
dc.date.issued	2017
dc.description.abstract	Brillouin 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.sponsorship	The 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.extent	12 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.3390/app7080761
dc.identifier.issn	2076-3417
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/26184
dc.language.iso	eng	en
dc.publisher	MDPI	en
dc.relation.ispartof	Applied sciences 2017, 7(8), 761	en
dc.relation.projectID	info:eu-repo/grantAgreement/MINECO//TEC2013-47264-C2-2-R/ES/	en
dc.relation.projectID	info:eu-repo/grantAgreement/ES/1PE/TEC2016-76021	en
dc.relation.publisherversion	https://dx.doi.org/10.3390/app7080761
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.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Stimulated Brillouin scattering	en
dc.subject	Brillouin optical time-domain analysis	en
dc.subject	Non-local effects	en
dc.title	Non-local effects in Brillouin optical time-domain analysis sensors	en
dc.type	info:eu-repo/semantics/article
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dspace.entity.type	Publication
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