A Closed-Loop Interrogation Technique for Multi-Point Temperature Measurement Using Fiber Bragg Gratings

dc.creatorPfrimer, FWD
dc.creatorKoyama, M
dc.creatorDante, A
dc.creatorFerreira, EC
dc.creatorDias, JAS
dc.date2014
dc.date36951
dc.date2014-07-30T13:39:18Z
dc.date2015-11-26T17:42:23Z
dc.date2014-07-30T13:39:18Z
dc.date2015-11-26T17:42:23Z
dc.date.accessioned2018-03-29T00:24:16Z
dc.date.available2018-03-29T00:24:16Z
dc.identifierJournal Of Lightwave Technology. Ieee-inst Electrical Electronics Engineers Inc, v. 32, n. 5, n. 971, n. 977, 2014.
dc.identifier0733-8724
dc.identifier1558-2213
dc.identifierWOS:000330129500014
dc.identifier10.1109/JLT.2013.2295536
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/52911
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/52911
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287276
dc.descriptionIn this paper a closed-loop interrogation technique for multi-point temperature measurement using fiber Bragg gratings (FBG) is presented. The technique uses a broadband light source and n tunable FBGs to interrogate an array of n FBGs sensors placed along the optical fiber. Each center wavelength of the tunable FBGs is matched with the center wavelength of one FBG sensor placed in the array. The light source directly illuminates the sensor array, so that all the light reflected from the FBGs enters in the optical circuit through an optical circulator and the reflected spectrum of each sensing FBG illuminates a matched tunable FBG. Because the current generated by the photodiode is proportional to the convolution between the two FBGs profiles (the sensor FBG and the tunable FBG), by controlling the value of the convolution at a fixed value, the center wavelengths of the two FBGs are kept spaced by a constant value. Therefore, the temperature of the FBG sensor can be associated with the temperature of the tunable FBG. A two channel prototype was constructed to validate the technique and a very high resolution of +/- 0.001 degrees C was obtained.
dc.description32
dc.description5
dc.description971
dc.description977
dc.languageen
dc.publisherIeee-inst Electrical Electronics Engineers Inc
dc.publisherPiscataway
dc.publisherEUA
dc.relationJournal Of Lightwave Technology
dc.relationJ. Lightwave Technol.
dc.rightsaberto
dc.rightshttp://www.ieee.org/publications_standards/publications/rights/rights_policies.html
dc.sourceWeb of Science
dc.subjectFiber Bragg gratings (FBGs)
dc.subjectinterrogation technique
dc.subjectmulti-point optical sensors
dc.subjectoptical fiber sensor
dc.subjecttemperature sensors
dc.subjectSensor System
dc.titleA Closed-Loop Interrogation Technique for Multi-Point Temperature Measurement Using Fiber Bragg Gratings
dc.typeArtículos de revistas


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