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dc.contributor.authorLi, Z.en_US
dc.contributor.authorAydin, K.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.date.accessioned2016-02-08T10:08:08Z
dc.date.available2016-02-08T10:08:08Z
dc.date.issued2008en_US
dc.identifier.issn0022-3727
dc.identifier.urihttp://hdl.handle.net/11693/23038
dc.description.abstractWe numerically and experimentally demonstrated highly directional emission from photonic crystals (PCs). Our structures comprise branched waveguide channels with a periodic doubling scheme. An incident electromagnetic wave can be first split into multiple beams using PC waveguide structures. The beams were then emitted at the output waveguide ports of the PC with the same phase, which resulted in a highly directional radiation pattern. Our results demonstrate that the full width at half maximum of the emission beam is nearly inversely proportional to the number of output waveguide ports. Typically, for a PC with sixteen output ports, the half-power beam width measured 4.8°, which was in good agreement with the calculated value of 4.1°. In contrast to the traditional beaming structures, our design did not involve grating-like structures, which resulted in a wider operation bandwidth.en_US
dc.language.isoEnglishen_US
dc.source.titleJournal of Physics D: Applied Physicsen_US
dc.relation.isversionofhttp://doi.org/10.1088/0022-3727/41/15/155115en_US
dc.titleWide bandwidth directional beaming via waveguide ports in photonic crystalsen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.citation.spage155115 (1-6)en_US
dc.citation.volumeNumber41en_US
dc.citation.issueNumber15en_US
dc.identifier.doi10.1088/0022-3727/41/15/155115en_US
dc.publisherInstitute of Physics Publishing Ltd.en_US
dc.contributor.bilkentauthorÖzbay, Ekmelen_US
dc.identifier.eissn1361-6463


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