Extrinsic Fabry-Perot Interferometer System Using Wavelength Modulated Source

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dc.contributor.authorMeller, Scott A.en
dc.contributor.committeechairWang, Anboen
dc.contributor.committeememberMurphy, Kent A.en
dc.contributor.committeememberClaus, Richard O.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:50:59Zen
dc.date.adate1996-12-04en
dc.date.available2014-03-14T20:50:59Zen
dc.date.issued1996-12-04en
dc.date.rdate1996-12-04en
dc.date.sdate1998-07-18en
dc.description.abstractInterferometric optical fiber sensors have proved many orders of magnitude more sensitive than their electrical counterparts, but they suffer from limitations in signal demodulation caused by phase ambiguity and complex fringe counting when the output phase difference exceeds one fringe period. Various signal demodulation methods have been developed to overcome some of the these drawbacks with limited success. This thesis proposes a new measurement system for the extrinsic Fabry-Perot interferometer (EFPI) sensor. Using a wavelength modulated source and a novel extended-gap EFPI, some of the limitations of interferometric signal demodulation are overcome. By scanning the output wavelength of a multilongitudinal mode laser diode through current modulation, the EFPI sensor signal is scanned through multiple fringes. Gap movement is then unambiguously determined by monitoring the phase of the multiple fringe pattern.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-15492117119623510en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-15492117119623510/en
dc.identifier.urihttp://hdl.handle.net/10919/36516en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.relation.haspartthesisfinal.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectoptical fiber sensorsen
dc.subjectinterferometryen
dc.subjectmultilongitudinal mode laser diodeen
dc.subjectextrinsic fabry-perot interferometeren
dc.subjectpseudo-heterodyne modulationen
dc.titleExtrinsic Fabry-Perot Interferometer System Using Wavelength Modulated Sourceen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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