简介：Multimode干扰(MMI)设备广泛地在平面lightwave电路(PLC)被使用。设备长度能很好与逐渐变细的multimode区域被减少。传统的设计公式基于弱限制的波导为MMI设备显示出大错误。作为波导宽度的替换与模式宽度基于分析，有更好的精确的一个设计公式被介绍。有软件模拟的比较验证了它的精确。CLC数字TN256

简介：这份报纸建议调节叉回转仪(M-TFG)到decouple的micromachined的一个改进图案在更好并且到增加分辨率驾驶并且察觉到指示之间的生气谈话。由采用双褶层的春天暂停，开车模式和感觉模式是机械地decoupled。通过双褶层的春天暂停和开车梳子的地点的小心的布局设计，机械联合效果被从察觉孤立讨厌的刺激进一步减少。优秀因素调查证明那个高质量的因素能被使用这结构达到，它能引进精确分辨率。作为结果，这个图案有潜力为起始的水平应用程序完成低偏爱飘移和精确分辨率。

简介：ThepurposeofthispaperistoconstructanorthogonalArmletmulti-waveletswithmul-tiplicityranddilationfactora.Firstly,thedefinitionofArmletswithdilationfactoraisproposedinthispaper.BasedontheTwo-scaleSimilarTransform(TST),thenotionofthePara-unitaryA-scaleSimilarTransform(PAST)isintroduced,andwealsogivethetransformonthealltwo-scalematrixsymbolsofthemulti-waveletswithdilationa.ThenweshowthatthePASTandthetransformonthematrixsymbolsofthemulti-waveletskeeptheorthogonalityofthemulti-waveletssystem.Wediscusstheconditionthatmulti-waveletscorrespondingtothemulti-scalingfunctionsareallArmlets.AfterperformingthePASTandthetransformonthematrixsymbolsofthemulti-wavelets,themulti-scalingfunctioncanbebalancedandthecorrespondingmulti-waveletscanbeArmletsatthesametime.TheconstructionofArmletswithhighorderisalsodiscussed.Atlast,byagivenexample,wecanconcludethatthealgorithmisfeasibleandefficient.

简介：All-opticalregeneratorscanbeusedtosuppressamplifiedspontaneousemission(ASE)noiseintroducedbycascadederbiumdopedfiberamplifiers(EDFAs)inopticalfibercommunicationsystemsandleadtotheimprovementofopticalreceiversensitivity.ByintroducingtheQ-factortransferfunction(QTF),weevaluatetheQ-factorperformanceofdegeneratefour-wavemixing(DFWM)regeneratorswithclockpumpandrevealthedifferencesbetweentheoptimalinputpowersdeterminedfromthestaticanddynamicpowertranferfunction(PTF)andtheQTFcurves.Oursimulationshowsthattheclock-pumpregneratoriscapableofimprovingtheQ-facorandreceiversensitivityfor40Gbit/sASE-degradedreturn-to-zeroon-offkeying(RZ-OOK)signalby2.58dBand4.2dB,respectively.

简介：Thisletterstudiesandanalyzestheworkingfeaturesofmaincircuitoftri-levelboostPowerFactorCorrect(PFC)converterandtheadvantagesoftri-levelswitchconverterinaspectsofbearinghigh-voltageofpowercomponents,overallsystemlossandmagneticcomponentselectionbaseduponthesingle-levelboostPFCswitchconverter.Besides,relyingontheapplicationofmi-croprocessorinpowerconvertertechnologyandDSP(DigitalSignalProcessing)chip'sstrongcal-culatingcapacity,theletterpresentstheadoptionofmodifiedschemeoftri-levelboostPFCconverterunderthecontrolofpredictivecontrolalgorithm.Moreover,theoperatingprincipleandcontrolmethodarespecified,theresultsofcircuittestandanalysisareprovidedandtheadvantagesofpre-dictivecontroltechnology-basedmulti-levelboostPFCconverterisverified.