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1、CompactwaveguidesplitternetworksYushengQian,JiguoSong,SeunghyunKim,WeishengHu,andGregoryP.NordinElectricalandComputerEngineering,BrighamYoungUniversity,Provo,UT84602USAnordin@ee.byu.eduAbstract:Wedemonstratecompactwaveguidesplitternetworksinsilicon-on-insulator(SOI)ribwaveg
2、uidesusingtrench-basedsplitters(TBSs)andbends(TBBs).Ratherthana90°geometry,weuse105°TBSstofacilitatereliablefabricationofhighaspectratiotrenchessuitablefor50/50splittingwhenfilledwithSU8.Threedimensional(3D)finitedifferencetimedomain(FDTD)simulationisusedforsplitterandbendd
3、esign.MeasuredTBBandTBSopticalefficienciesare84%and68%,respectively.Compact105°1×4,1×8,and1×32trench-basedsplitternetworks(TBSNs)aredemonstrated.Themeasuredtotalopticallossofthe1×32TBSNis9.15dB.Itssizeisonly700μm×1600μmforanoutputwaveguidespacingof50μm.©2008OpticalSocietyof
4、AmericaOCIScodes:(130.0130)Integratedoptics;(230.1360)Beamsplitters;(260.6970)Totalinternalreflection;(230.7370)Waveguides;(130.1750)Components;(250.5300)Photonicintegratedcircuits.ReferencesandLinks1.J.GametandG.Pandraud,“Field-matchingY-branchforlowlosspowersplitter,”Opt.
5、Commun.248,423-429(2005).2.Y.Sakamaki,T.Saida,M.Tamura,T.Hashimoto,andH.Takahashi,“Low-lossY-branchwaveguidesdesignedbywavefrontmatchingmethodandtheirapplicationtoacompact1×32splitter,”Electron.Lett.43,217-219(2007).3.K.B.Mogensen,Y.C.Kwok,J.C.T.Eijkel,N.J.Peterson,A.Manz,a
6、ndJ.P.Kutter,“AmicrofluidicdevicewithanintegratedwaveguidebeamsplitterforvelocitymeasurementsofflowingparticlesbyFouriertransformation,”Anal.Chem.75,4931-4936(2003).4.A.Cleary,S.Garcia-Blanco,A.Glidle,J.S.Aitchison,P.Laybourn,andJ.M.Cooper,“Anintegratedfluorescencearrayasap
7、latformforlab-on-a-chiptechnologyusingmultimodeinterferencesplitters,”IEEESens.J.5,1315-1320(2005).5.Y.Hibino,F.Hanawa,H.Nakagome,M.Ishii,andN.Takato,Member,IEEE,“Highreliabilityopticalsplitterscomposedofsilica-basedplanarlightwavecircuits,”J.LightwaveTechnol.13,1728-1735(1
8、995).6.Y.HidaandY.Inoue,Member,IEEE,F.Hanawa,T.Fukumitsu,Y.Enomoto,andN.Takato,Mem
