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Spot events detection along a large scale sensor based on ultra weak FBGs using time-frequency analysis

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Spot events detection along a large scale sensor based on ultra weak FBGs using time-frequency analysis

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dc.contributor.author Ricchiuti, Amelia Lavinia es_ES
dc.contributor.author Sales Maicas, Salvador es_ES
dc.date.accessioned 2017-06-15T11:16:22Z
dc.date.available 2017-06-15T11:16:22Z
dc.date.issued 2016-02-10
dc.identifier.issn 1559-128X
dc.identifier.uri http://hdl.handle.net/10251/82884
dc.description.abstract [EN] A simple scheme for interrogating a 5 m-long photonics device and its potential applications to quasi-distributed fiber sensing is proposed. The sensor consists of an array of 500 identical very weak fiber Bragg gratings (FBGs). The gratings are 9 mm-long and have been serially written in cascade along a single optical fiber. The measurement system is based on a combination of optical time domain reflectrometry (OTDR) and frequency scanning of the interrogating pulse. The time-frequency analysis is performed by launching an optical pulse into the sensor and by retrieving and analyzing the back-reflected signal. The measurement of the temperature, length and position of spot events along the sensors is demonstrated, with good accuracy. As both spatial and temperature resolution of the method depend on the input pulse duration, the system performance can be controlled and optimized by properly choosing the temporal duration of the interrogating pulse. A spatial resolution of 9 mm (ultimately dictated by one grating length) has been obtained with an 80 ps optical pulse; while a temperature resolution of less than 0.42 K has been demonstrated using a 500 ps incident pulse. The sensor proposed proves to be simple, robust, polarization insensitive and alleviates the instrumentation complexity for distributed sensing applications. es_ES
dc.description.sponsorship Ministerio de Educacion, Cultura y Deporte; Ministerio de Economia y Competitividad (TEC2014-60378-C2-1-R); Generalitat Valenciana (GRISOLIA/2013/034); Research Excellency Award Program (GVA PROMETEO 2013/012).
dc.language Inglés es_ES
dc.publisher Optical Society of America es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//TEC2014-60378-C2-1-R/ES/FOTONICA DE MICROONDAS PARA APLICACIONES EMERGENTES/ es_ES
dc.relation GV/GRISOLIA/2013/034 es_ES
dc.relation GV/PROMETEO/2013/012 es_ES
dc.relation.ispartof Applied Optics es_ES
dc.rights Reconocimiento - No comercial (by-nc) es_ES
dc.subject Fiber Bragg gratings es_ES
dc.subject Fiber optics sensors es_ES
dc.subject Optical sensing and sensors es_ES
dc.subject Temperature. es_ES
dc.subject.classification TEORIA DE LA SEÑAL Y COMUNICACIONES es_ES
dc.title Spot events detection along a large scale sensor based on ultra weak FBGs using time-frequency analysis es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1364/AO.55.001054
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Telecomunicación - Escola Tècnica Superior d'Enginyers de Telecomunicació es_ES
dc.description.bibliographicCitation Ricchiuti, AL.; Sales Maicas, S. (2016). Spot events detection along a large scale sensor based on ultra weak FBGs using time-frequency analysis. Applied Optics. 55(5):1054-1060. https://doi.org/10.1364/AO.55.001054 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1364/AO.55.001054 es_ES
dc.description.upvformatpinicio 1054 es_ES
dc.description.upvformatpfin 1060 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 55 es_ES
dc.description.issue 5 es_ES
dc.relation.senia 300514 es_ES
dc.identifier.pmid 26906375
dc.contributor.funder Ministerio de Economía y Competitividad
dc.contributor.funder Generalitat Valenciana


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