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1、Boundmodesanalysisofsymmetricdielectricloadedsurfaceplasmon-polaritonwaveguides*YunBinfeng,HuGuohua,andCuiYipingAdvancedPhotonicsCenter,SoutheastUniversity,Nanjing,China,210096*Correspondingauthor:cyp@seu.edu.cnAbstract:Asymmetricdielectricloadedsurfaceplasmonpolaritonwaveguidei
2、sproposedandnumericallyanalyzed.Thecharacteristicsofthesymmetricandasymmetricboundmodes,includingtheeffectivemodeindices,propagationlengths,modesizesandmodeshapesattelecomwavelength1.55µmareinvestigatedindetail.Thesimulationresultsshowthatthesub-wavelengthconfinement(about1.45µm
3、)andalongpropagation(about820µm)canberealized.Althoughthemodesizesareabitlargerthanthatofthedielectricloadedsurfaceplasmonpolaritonwaveguide,anorderlongerpropagationlengthcanbeachieved.Theproposedsymmetricdielectricloadedsurfaceplasmonpolaritonwaveguideprovidesapotentialforlowlo
4、ssandhighdensityphotonicintegration.©2009OpticalSocietyofAmericaOCIScodes:(130.2790)Guidewaves;(240.6680)Surfaceplasmons;(250.5300)PhotonicintegratedcircuitsReferencesandlinks1.V.M.ShalaevandS.Kawata,eds.,Nanophotonicswithsurfaceplasmons,(Elsevier,2007).2.G.Gagnon,N.Lahoud,G.A.M
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