Broadband circular polarizer based on high-contrast gratings

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buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage2096en_US
dc.citation.issueNumber11en_US
dc.citation.spage2094en_US
dc.citation.volumeNumber37en_US
dc.contributor.authorMutlu, M.en_US
dc.contributor.authorAkosman, A. E.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.date.accessioned2016-02-08T09:46:28Z
dc.date.available2016-02-08T09:46:28Z
dc.date.issued2012-05-30en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractA circular polarizer, which is composed of periodic and two-dimensional dielectric high-contrast gratings, is designed theoretically such that a unity conversion efficiency is achieved at λ0 = 1.55 μm. The operation is obtained by the achievement of the simultaneous unity transmission of transverse magnetic and transverse electric waves with a phase difference of π/2, meaning that an optimized geometrical anisotropy is accomplished. By the utilization of the rigorous coupled-wave analysis and finite-difference time-domain methods, it is shown that a percent bandwidth of ∼50% can be achieved when the operation bandwidth is defined as the wavelengths for which the conversion efficiency exceeds 0.9.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T09:46:28Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2012en
dc.identifier.doi10.1364/OL.37.002094en_US
dc.identifier.issn0146-9592
dc.identifier.urihttp://hdl.handle.net/11693/21445
dc.language.isoEnglishen_US
dc.publisherOptical Society of Americaen_US
dc.relation.isversionofhttp://dx.doi.org/10.1364/OL.37.002094en_US
dc.source.titleOptics Lettersen_US
dc.subjectCircular polarizersen_US
dc.subjectFinite-difference time-domain (FDTD) methodsen_US
dc.subjectGeometrical anisotropyen_US
dc.subjectHigh contrasten_US
dc.subjectOperation bandwidthen_US
dc.subjectPhase differenceen_US
dc.subjectRigorous coupled wave analysisen_US
dc.subjectTransverse electric wavesen_US
dc.subjectTransverse magneticen_US
dc.subjectCircular polarizationen_US
dc.subjectConversion efficiencyen_US
dc.subjectElectromagnetic wavesen_US
dc.subjectFinite difference time domain methoden_US
dc.subjectDiffraction gratingsen_US
dc.titleBroadband circular polarizer based on high-contrast gratingsen_US
dc.typeArticleen_US

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