简介:Theliquidcrystalcompositematerialsconsistofmicrodroplersofliquidcrystalswhicharespontaneouslyformedinamatrixofapolymeratthetimeofitspolymerization.Thedirectorconfigurationinliquidcrystaldroplets.themodeloforientationofdroplets,andthecontrastratiosofacellareinvestigated.Dropletsize,spacinganddistributionarereadilycontrolledinthesematerialstoallowoptimizationofdisplaysbaseduponelectricallycontrolledlightscatteringfromtheliquidcrystaldroplets.Preliminaryexperimentalandtheoreticalstudiesofthelightscatteringandelectro-opticresponseofnewmaterialshowthatthesematerialscanoffernewfeaturessuitableforlargeareadisplaysandlightvalves.
简介:影印石版术实验与electrooptically悦耳的阶段步借助于一个光阶段面具被执行。阶段面具由转换铁电体领域的六角形的格子在z切割锂niobate底层上制作了的2-dimensional组成。电镀物品光学地悦耳的阶段步在转换领域之间,被一个外部电场的应用程序经由透明电极沿着水晶的z轴获得。氩激光的瞄准横梁通过阶段面具和近的领域紧张模式,在Talbot长度并且为应用电压的不同价值的不同飞机,被用于光刻的实验。初步的结果被显示出,进一步的应用被讨论。这研究部分是的CLC数字TN305在FIRB工程以内由MIUR资助了(没有。RBNE01KZ94)并且部分由MIUR工程(号码77DDN.1105/2002)。
简介:A2×2cross/barpolymerelectro-optic(EO)routingswitchisproposed,whichiscomposedoftwopassivechannelwaveguidesandtwoactiveEOpolymermicroringswithbendingradiusofonly13.76μm.Detailedstructure,theoryandformulationareprovidedtocharacterizetheoutputpoweroftheswitch.Forobtainingfundamentalmodepropagation,smallbendinglossandphase-matchingbetweenchannelwaveguideandmicroringresonator(MRR)waveguide,thestructuralparametersareoptimizedunderthewavelengthof1550nm.Analysesandsimulationsonoutputpowerandoutputspectraindicatethataswitchingvoltageof5Visdesiredtorealizetheexchangebetweencrossstateandbarstate,thecrosstalkundercrossstateandthatunderbarstateareabout28.8dBand39.9dB,respectively,andtheinsertionlossesunderthesetwostatesareabout2.42dBand0.13dB,respectively.ComparedwithourfourEOswitchesreportedbefore,thisdevicepossessesultra-compactsizeof0.233mm×0.233mmaswellaslowcrosstalkandinsertionloss,andthereforeitcanserveasagoodcandidateforconstructinglarge-scaleopticalroutersorswitchingarraysinphotonicnetwork-on-chip(NoC).