Physics and applications of defect structures in photonic crystals

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buir.contributor.authorBayındır, Mehmet
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage250en_US
dc.citation.spage237en_US
dc.citation.volumeNumber5000en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.contributor.authorGüven, Kaanen_US
dc.contributor.authorBayındır, Mehmeten_US
dc.coverage.spatialSan Jose, California, United Statesen_US
dc.date.accessioned2016-02-08T11:55:28Zen_US
dc.date.available2016-02-08T11:55:28Zen_US
dc.date.issued2003en_US
dc.departmentDepartment of Physicsen_US
dc.descriptionDate of Conference: 25-31 January 2003en_US
dc.descriptionConference Name: SPIE Integrated Optoelectronic Devices, 2003en_US
dc.description.abstractPhotonic crystals are three dimensional periodic structures having the property of reflecting the electromagnetic (EM) waves in all dimensions, for a certain range of frequencies. Defects or cavities around the same geometry can also be built by means of adding or removing material. The electrical fields in such cavities are usually enhanced, and by placing active devices in such cavities, one can make the device benefit from the wavelength selectivity and the large enhancement of the resonant EM field within the cavity. By using coupled periodic defects, we have experimentally observed a new type of waveguiding in a photonic crystal. A complete transmission was achieved throughout the entire waveguiding band. The transmission, phase, and delay time characteristics of the various coupled-cavity structures were measured and calculated. We observed the eigenmode splitting, waveguiding through the coupled cavities, splitting and switching of electromagnetic waves in waveguide ports, and Mach-Xender interferometer effect in such structures. The corresponding field patterns and the transmission spectra were obtained from the finite-difference-time-domain (FDTD) simulations. We developed a theory based on the classical wave analog of the tight-binding (TB) approximation in solid state physics. Experimental results are in good agreement with the FDTD simulations and predictions of the TB approximation.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T11:55:28Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2003en
dc.identifier.doi10.1117/12.480055en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/11693/27514en_US
dc.language.isoEnglishen_US
dc.publisherSPIEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1117/12.480055en_US
dc.source.titleProceedings of SPIE Vol. 5000, Photonic Crystal Materials and Devicesen_US
dc.subjectCoupled cavityen_US
dc.subjectFDTDen_US
dc.subjectMach-Zehnderen_US
dc.subjectPhotonic crystalsen_US
dc.subjectTight binding approximationen_US
dc.subjectWaveguideen_US
dc.subjectApproximation theoryen_US
dc.subjectComputer simulationen_US
dc.titlePhysics and applications of defect structures in photonic crystalsen_US
dc.typeConference Paperen_US

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