Heterodyne Interferometry Applied to the Characterization of Acousto-Electro-Optic Light Modulators

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dc.contributor.authorKitano, C. [UNESP]
dc.contributor.authorHiguti, R. T. [UNESP]
dc.contributor.authorSakamoto, J. M. S.
dc.contributor.authorPacheco, G. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:29:09Z
dc.date.available2014-05-20T13:29:09Z
dc.date.issued2012-01-01
dc.description.abstractWhen the electro-optic and acousto-optic effects are combined into a single device, the resulting acousto-electro-optic (AEO) modulator shows improved flexibility to overcome some limitations of the individual modulators or their cascade combinations. By using optical interferometry, it is possible to investigate the AEO modulator behavior as a function of this applied voltage. By this way, a lithium niobate AEO modulator is positioned in one of the arms of a Mach-Zehnder interferometer and operates at 62 MHz frequency, which constitutes the intermediate frequency of the heterodyne interferometer. Operating the AEO modulator in the acousto-optic small diffraction efficiency regime, the photodetected signal amplitude and phase are analyzed, and the induced phase shift, transmission curve and linearity response are obtained. The experimental results show good agreement with that expected from the coupled-mode theory. The possibility of linear control of the optical phase shift by the external voltage, from 0 to 2 p radians, is demonstrated.en
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Elect Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Elect Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent84-87
dc.identifierhttp://dx.doi.org/10.1063/1.3703144
dc.identifier.citationInternational Congress on Ultrasonics (gdansk 2011). Melville: Amer Inst Physics, v. 1433, p. 84-87, 2012.
dc.identifier.doi10.1063/1.3703144
dc.identifier.issn0094-243X
dc.identifier.lattes2883440351895167
dc.identifier.lattes6405339510883203
dc.identifier.orcid0000-0003-4201-5617
dc.identifier.orcid0000-0001-6320-755X
dc.identifier.urihttp://hdl.handle.net/11449/9796
dc.identifier.wosWOS:000307631000015
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofInternational Congress on Ultrasonics (gdansk 2011)
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectInterferometersen
dc.subjectAcousto-optical devicesen
dc.subjectElectro-optical effectsen
dc.titleHeterodyne Interferometry Applied to the Characterization of Acousto-Electro-Optic Light Modulatorsen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.aip.org/pubservs/web_posting_guidelines.html
dcterms.rightsHolderAmer Inst Physics
unesp.author.lattes6405339510883203[2]
unesp.author.lattes2883440351895167[1]
unesp.author.orcid0000-0003-4201-5617[2]
unesp.author.orcid0000-0001-6320-755X[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentEngenharia Elétrica - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia