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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/72061
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dc.contributor.authorFranco, Marcos A.R.-
dc.contributor.authorPatrício, Paulo S.-
dc.contributor.authorPitarello, Tânia R.-
dc.date.accessioned2014-05-27T11:25:20Z-
dc.date.accessioned2016-10-25T18:32:56Z-
dc.date.available2014-05-27T11:25:20Z-
dc.date.available2016-10-25T18:32:56Z-
dc.date.issued2010-12-01-
dc.identifierhttp://dx.doi.org/10.1117/12.868246-
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, v. 7839.-
dc.identifier.issn0277-786X-
dc.identifier.urihttp://hdl.handle.net/11449/72061-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/72061-
dc.description.abstractWe address the bandgap effect and the thermo-optical response of high-index liquid crystal (LC) infiltrated in photonic crystal fibers (PCF) and in hybrid photonic crystal fibers (HPCF). The PCF and HPCF consist of solid-core microstructured optical fibers with hexagonal lattice of air-holes or holes filled with LC. The HPCF is built from the PCF design by changing its cladding microstructure only in a horizontal central line by including large holes filled with high-index material. The HPCF supports propagating optical modes by two physical effects: the modified total internal reflection (mTIR) and the photonic bandgap (PBG). Nevertheless conventional PCF propagates light by the mTIR effect if holes are filled with low refractive index material or by the bandgap effect if the microstructure of holes is filled with high refractive-index material. The presence of a line of holes with high-index LC determines that low-loss optical propagation only occurs on the bandgap condition. The considered nematic liquid crystal E7 is an anisotropic uniaxial media with large thermo-optic coefficient; consequently temperature changes cause remarkable shifts in the transmission spectrums allowing thermal tunability of the bandgaps. Photonic bandgap guidance and thermally induced changes in the transmission spectrum were numerically investigated by using a computational program based on the beam propagation method. © 2010 SPIE.en
dc.language.isoeng-
dc.sourceScopus-
dc.subjectFiber optics-
dc.subjectLiquid crystal-
dc.subjectMicrostructured optical fibers-
dc.subjectPhotonic bandgap-
dc.subjectPhotonic crystal fibers-
dc.subjectAir holes-
dc.subjectBand gap effects-
dc.subjectBand gaps-
dc.subjectComputational program-
dc.subjectHexagonal lattice-
dc.subjectHigh Index materials-
dc.subjectHigh-index-
dc.subjectHybrid photonic crystals-
dc.subjectIndex material-
dc.subjectLow loss-
dc.subjectLow-refractive-index materials-
dc.subjectMicro-structured optical fibers-
dc.subjectNematic liquids-
dc.subjectOptical modes-
dc.subjectOptical propagation-
dc.subjectPhysical effects-
dc.subjectTemperature changes-
dc.subjectThermally induced-
dc.subjectThermo-optic coefficients-
dc.subjectThermo-optical-
dc.subjectTotal internal reflections-
dc.subjectTransmission spectrums-
dc.subjectTunabilities-
dc.subjectUniaxial media-
dc.subjectAnisotropic media-
dc.subjectCrystal whiskers-
dc.subjectEnergy gap-
dc.subjectFibers-
dc.subjectLiquid crystals-
dc.subjectLiquids-
dc.subjectMetal cladding-
dc.subjectMicrostructure-
dc.subjectNematic liquid crystals-
dc.subjectOptical fibers-
dc.subjectOptical waveguides-
dc.subjectPhotonic bandgap fibers-
dc.subjectRefractive index-
dc.subjectSpontaneous emission-
dc.subjectPhotonic crystals-
dc.titleThermal tunability of photonic bandgaps in photonic crystal fibers selectively filled with nematic liquid crystalen
dc.typeoutro-
dc.contributor.institutionInstituto de Estudos Avançados - IEAv-
dc.contributor.institutionInstituto Tecnológico de Aeronáutica - ITA-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationInstituto de Estudos Avançados - IEAv, São José dos Campos-SP, 12228-001-
dc.description.affiliationInstituto Tecnológico de Aeronáutica - ITA, São José dos Campos-SP, 12228-900-
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho, Guaratinguetá-SP, 12516-410-
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho, Guaratinguetá-SP, 12516-410-
dc.identifier.doi10.1117/12.868246-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering-
dc.identifier.scopus2-s2.0-79953123514-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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