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A simple, self-referenced, intensity-based optical fibre sensor for temperature measurements

2013Journal article Restricted access
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dc.contributor.authorSilva, Ricardo M.
dc.contributor.authorBaptista, J.M.
dc.contributor.authorSantos, J.L.
dc.contributor.authorLobo Ribeiro, Antonio B.
dc.contributor.authorAraújo, F.M.
dc.contributor.authorFerreira, L.A.
dc.contributor.authorFrazão, O.
dc.date.accessioned2019-09-16T10:15:11Z
dc.date.available2019-09-16T10:15:11Z
dc.date.issued2013
dc.description.abstractA sensing configuration based on an intensity optical fibre sensor for temperature measurement is reported. Two sensing heads, with identical geometrical configuration, connected in series are implemented. Each sensing head is placed between two fibre Bragg gratings (FBGs), being able to provide a self-referenced measurement, and thus eliminate errors that may arise from undesired intensity fluctuations in the configuration. The first FBG, placed before the aluminium tube, acts as the reference FBG, while the second FBG, placed after the aluminium tube, acts as the signal FBG. It is observed that the amplitude of the signal FBG decays when temperature increases, due to the increase of the ferrules' gap and as result of the material thermal expansion. The temperature response has a behaviour that corresponds to a polynomial fit of third order. The crosstalk between the two sensing heads in series is analysed. The temperature sensitivities obtained in the intervals regions of [36, 48.5] °C and [64, 85] °C are 2.67×10-3 °C-1 and 1.74×10-4 °C-1, respectively. Ten sensing heads with this configuration can be multiplexed in series network topology.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.optcom.2012.11.006pt_PT
dc.identifier.issn00304018
dc.identifier.urihttp://hdl.handle.net/10284/7915
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0030401812012734pt_PT
dc.subjectIntensity optical fibre sensorpt_PT
dc.subjectFibre Bragg gratingpt_PT
dc.subjectTemperaturept_PT
dc.titleA simple, self-referenced, intensity-based optical fibre sensor for temperature measurementspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage218pt_PT
oaire.citation.startPage215pt_PT
oaire.citation.titleOptics Communicationspt_PT
oaire.citation.volume291pt_PT
person.familyNameLobo Ribeiro
person.givenNameAntonio
person.identifier.ciencia-id8115-5EF3-3071
person.identifier.orcid0000-0002-2988-1222
person.identifier.ridD-3961-2011
person.identifier.scopus-author-id55481108100
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8fde3cf0-3a27-4c58-b2ba-6cfcda6e4517
relation.isAuthorOfPublication.latestForDiscovery8fde3cf0-3a27-4c58-b2ba-6cfcda6e4517

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