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1、HomeSearchCollectionsJournalsAboutContactusMyIOPscienceWidebandabsorptioninfibonacciquasi-periodicgraphene-basedhyperbolicmetamaterialsThiscontenthasbeendownloadedfromIOPscience.Pleasescrolldowntoseethefulltext.2014J.Opt.16125108(http://iopscience.iop.org/2040-8986/16/12/1251
2、08)Viewthetableofcontentsforthisissue,orgotothejournalhomepageformoreDownloaddetails:IPAddress:202.119.79.14Thiscontentwasdownloadedon14/12/2014at11:28Pleasenotethattermsandconditionsapply.JournalofOpticsJ.Opt.16(2014)125108(7pp)doi:10.1088/2040-8978/16/12/125108Widebandabsor
3、ptioninfibonacciquasi-periodicgraphene-basedhyperbolicmetamaterials1,2222RenxiaNing,ShaobinLiu,HaifengZhang,XiangkunKong,21BoruiBianandJieBao1CollegeofInformationEngineering,HuangshanUniversity,Huangshan,245041,People’sRepublicofChina2KeyLaboratoryofRadarImagingandMicrowavePho
4、tonics(NanjingUniv.Aeronaut.Astronaut.),Mini-stryofEducation,CollegeofElectronicandInformationEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing,210016,People’sRepublicofChinaE-mail:plrg@nuaa.edu.cnReceived10August2014,revised14October2014Acceptedforpublication
5、17October2014Published27November2014AbstractAheterostructurecontainingaFibonacciquasi-periodiclayerandaresonantmetalbackreflectorisproposed,whichcanrealizewidebandabsorption.TheFibonaccilayeriscomposedofgraphene-basedhyperbolicmetamaterialsandisotropicmediatoobtainwidebandabso
6、rption.Toenhanceabsorption,animpedance-matchinglayerisputontopoftheFibonaccilayer.Itisshowntoabsorbroughly90%ofallavailableelectromagneticwavesinan11terahertzabsorptionbandwidthforatransversemagneticmodeatnormalangleincidence.Theabsorptionbandwidthisaffectedbythereflectionband
7、gap.Comparedwithsomepreviousdesigns,ourproposedstructurehasalargerabsorptionbandwidthandhigherabsorptioninthemid-infraredrange.Theresultsshouldbevaluableinthedesignofinfraredstealthandbroadbandoptoelectronicdevices.Keywords:widebandabsorption,fibonacciquasi-periodic,graphene-b
8、asedhyperbolicmetamaterials(Somefiguresmayappearincolouronlyintheonli
