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1、JournalofOpticsPAPER•OPENACCESSRelatedcontent-InvisiblecloakingofmaterialbodiesusingTherefractiveindexofreciprocalelectromagneticthewaveflowmethodAlexanderEDubinovandLyubov'AmediaMytareva-RoadmapontransformationopticsMartinMcCall,JohnBPendry,VincenzoTocitethisarticle:MartinWMcCall
2、etal2016J.Opt.18044017Galdietal.-ComplexraytracinginbiaxialanisotropicabsorbingmediaYanyangWang,PengShi,HongXinetal.Viewthearticleonlineforupdatesandenhancements.Recentcitations-Generalizedtransformationdesign:Metrics,speeds,anddiffusionPaulKinslerandMartinW.McCall-Impedancerescal
3、ingandscatteringfromtransformationopticsdevicesPaulKinsler-Onspacetimetransformationoptics:temporalandspatialdispersionJonathanGratusetalThiscontentwasdownloadedfromIPaddress117.165.42.60on19/08/2018at12:44JournalofOpticsJ.Opt.18(2016)044017(9pp)doi:10.1088/2040-8978/18/4/044017Th
4、erefractiveindexofreciprocalelectromagneticmediaMartinWMcCall,PaulKinslerandRenèDMTopfDepartmentofPhysics,TheBlackettLaboratoryImperialCollegeofScience,TechnologyandMedicinePrinceConsortRoad,LondonSW72AZ,UKE-mail:m.mccall@imperial.ac.ukReceived14September2015,revised18November2015
5、Acceptedforpublication20November2015Published1April2016AbstractWestudytheelectromagneticsofmediadescribedbyidenticalinhomogeneousrelativedielectricandmagnetictensors,=m.Suchmediaoccurgenericallyasspatialtransformationmedia,i.e.electromagneticmediathataredefinedbyadeformationofspac
6、e.Weshowthatsuchmediaarecompletelydescribedbyarefractiveindexn(rs,ˆ)thatdependsonpositionranddirectionsˆ,butisindependentofpolarization.Thephasesurfaceisalwaysellipsoidal,andn(rs,ˆ)isthereforerepresentedbytheradiusvectortothesurfaceoftheellipsoid.Weapplyourmethodtocalculatetheangu
7、lardependenceoftherefractiveindexinthewell-studiedcylindricalcloakandtoanewkindofstructurallychiralmediuminducedbyatwistdeformation.Bywayofasimpleexamplewealsoshowthatmediaforwhich=mdonotingeneralpreservetheimpedancepropertiesofvacuum.Theimplicationsofthissomewhatsurprisingconclu
8、sionforthefieldoftransformationopt
