简介：AslowlightstructureMach-Zehnderfiberinterferometeristheoreticallydemonstrated.Thesensitivityoftheinterferometerissignificantlyenhancedbythedispersionoftheslowlightstructure.Thenumericalresultsshowthatthesensitivityenhancementfactorvarieswiththecouplingcoefficientandreachesitsmaximumundercriticalcouplingconditions.

简介：聚合Mach-Zehnder肋骨波导的系统的分析基于计算和优化被介绍。模拟与有效索引方法(EIM)被执行并且二维(2-D)有限差别横梁繁殖方法(FD-BPM)。在连续聚合物层之间的大折射索引步被使用EIM减少，因此，计算的精确被保证。象Y连接角度和分离差距那样的波导的重要参数被讨论，他们与光力量繁殖和损失特征的关系在这篇论文被调查。优化结构的全部的损失是0.258dB。CLC数字TN252这个工程被基础为武器设备的进展研究节目支持，中国(资助No.02040105DZ02)。

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简介：Anup-taperedMach-Zehnderinterferometer(MZI)isproposedanddemonstrated.Byapplyingamodificationsettingofanexistingprogramofthefusionsplicer,twoup-tapersarefabricatedbypushingbothsidesofthefibertothemiddle.Itisfoundthatthemaximumextinctionratioreachesupto20dB.Withthefiberlengthof6.3-49cmbetweenthetwoup-tapers,thefreespectralrange(FSR)changesfrom10.7nmto1.3nm.Besides,thewavelengthofmaximumextinctionratioshiftstotheshorterwavelengthinthescopeoftensofnanometers,whiletheelongationchangesfrom0%to0.23%.

简介：Fiber-opticMach-Zehnderinterferometer(MZI)canbeusedaswavelength-multiplexersanddemultiplexers.The△Land△φdirectlyinfluencethepropertiesofMZI.Tolengthenthe△Lcandemultiplexmuchmorewavelengths,butwhenthe△Lislonger,thetemperaturewillinfluenceMZImoreseriously.Amethodtosolvethisproblemisproposed,whichenablesMZItoworkstably.Thewavelengthdistanceis0.8nm,andtheextinctionratioishigh.

简介：Foranintegratedelectro-opticalsensor,theoperatingpointhasasignificanteffectontheperformanceofthesensor.Inthispaper,anopticalwaveguideelectricfieldsensorwithcontrollableoperatingpointisdesignedusingLiNbO3materials,whichhasanasymmetricMach-Zehnderinterferometer(MZI)structure.Theoreticalresultsshowthattheoptimaloperatingpointcanbeobtainedandcontrolledbytuningtheoutputwavelengthofthetunablelaserusedinthesensingsystem.Thesimulationresultsshowthatthesensitivityabout83dB·μV/mcanbeobtained,andthelineardynamicrangeaslargeas60dBcanbeachieved.Andthefabricationtoleranceofthecenter-to-centerdistanceforthe3dBcouplerusedintheasymmetricMZIis~0.5μm,whilethepowersplittingratiooftheYbranchiswithmoretolerance.

简介：TheNANDoperationat250Gbit/sbasedonquantumdot-semiconductoropticalamplifiers(QD-SOAs)ismodeled.BysolvingtherateequationsofSOAsintheformofaMach-Zehnderinterferometer(MZI),theperformanceofNANDgateisnumericallyinvestigated.Themodeltakestheeffectsofampli?edspontaneousemission(ASE)andtheinputpulseenergyonthesystem'squalityfactorintoaccount.ResultsshowthatNANDgateinQD-SOA-MZIbasedstructureisfeasibleat250Gbit/swithaproperqualityfactor.Thedecreaseinqualityfactorispredictedforhighspontaneousemissionfactor(NSP).Foranidealamplifier(NSP=2),theQ-factoris17.8for30dBgain.

简介：有可变系数的一个微波photonic过滤器(MPF)被建议并且示威，它被多波长纤维激光和Mach-Zehnder干涉仪(MZI)构造。通过改变Mach-Zehnder干扰的斜坡特征，光谱由光可变延期线(OVDL)调整了，到紧张调整(IM)的从阶段调整(下午)的变换被认识到。有Lyot-Sagnac光过滤器的多波长纤维激光有可变波长间距。设计过滤器因此有龙头和龙头重量的一个可变数字。作为结果，通带中心频率的悦耳的范围是2.6GHz。MPF的可配置性能被调整纤维激光的产量也认识到。

简介：AFourieranalysisappliedtotheMach–Zehnderinterferometer(MZI)transmissionspectrumforsimultaneousrefractiveindex(RI)andtemperaturemeasurementsisproposedandexperimentallydemonstratedinthisLetter.InthefastFouriertransform(FFT)spectrumoftheMZItransmissionspectrum,severalfrequencycomponentsaregenerallyobserved,whichmeansthatthetransmissionspectrumoftheMZIisformedbythesuperpositionofsomedual-modeinterference(DMI)spectra,andeachfrequencycomponentrepresentsdifferentcore-claddinginterferences.WecanselectsomedominantfrequencycomponentsintheFFTspectrumoftheMZItransmissionspectrumtotaketheinverseFFT(IFFT).Then,thecorrespondingDMIpatternscanbeobtained.DuetotheshiftofthewavelengthoftheseDMIspectrawithchangesintheenvironmentalparameters,wecanusethecoefficientmatrixoftheseDMIspectraformulti-parametersensing.InthisLetter,twoDMIpatternsareseparatedfromtheresultanttransmissionspectrumoftheMZI.AstheRIandtemperaturechange,theshiftsofthetwoDMIpatternswithrespecttotheRIandtemperaturewillbeobserved.ThesensitivitiesoftheRIandtemperatureare-137.1806nm∕RIU(RIunit)and0.0860nm∕°C,and-22.9955nm∕RIUand0.0610nm∕°CforthetwoDMIs.Accordingly,itcanbeusedtosimultaneouslymeasureRIandtemperaturechanges.Theapproachcaneliminatetheinfluenceofmultipleinterferencesandimprovetheaccuracyofthesensor.

简介：Anovelphotonic-assistedapproachtomicrowavefrequencymeasurementisproposedandexperimentallydemonstrated.Theproposedschemeisbasedonthefrequency-to-powermappingwithdifferenttransmissionresponses.Apolarizerisusedinoneoutputbranchofaphasemodulatortosimultaneouslyimplementphasemodulationandintensitymodulation.OwingtothecomplementarynatureofthetransmissionresponsesandtheMach-Zehnderinterferometers(MZIs),thisschemetheoreticallyprovideshighresolutionandtunablemeasurementrange.Themeasurementerrorsintheexperimentalresultscanbekeptwithin0.2GHzoverafrequencyrangefrom0.1to5.3GHz.

简介：传统的不对称的Mach-Zehnder干涉仪(AMZI)上的分析基于方向性的couplers(DC)显示出的二3dB，那由产生阶段的coupler(PGC)由增加一个另外的非线性的阶段产生了到AMZI的原来的阶段差别的光过滤器，它的非周期性的频率反应能被修改，并且一个严格地周期的系列能被获得。用在AMZI区域前后的二PGC的AMZI过滤器的新奇结构被建议。与20nm的需要的免费光谱范围(FSR)，设备的设计和优化作为缓冲区作为核心和PMMA-GMA用聚合物SU-8被执行。尽管插入损失(IL)变得比传统的AMZI过滤器的大，FSR作为20nm的期望的时期将近一致。

简介：由一种Mach-Zehnder(MZ)类型组成的一个常规LiNbO3紧张调节的人的特征退火了质子交换(无尾猿)波导和共面的波导(CPW)调整电极被介绍。有进程参数的无尾猿波导特征和他们的关系被分析。同时，调整电极的电的特征例如调整电压，有效索引与调整带宽联系了的微波，特征阻抗，也详细被调查。

简介：由在活跃区域和杆聚合物的Pockels效果使用poled-polymer/silicon槽波导，我们建议一种Mach-Zehnder干涉仪(MZI)电镀物品眼(EO)开关在1550nm操作了。结构的参数为认识到正常切换的功能被优化。在槽波导参数上交换特征的相关性被调查。与170nm慭据?景瀠汯浹牥猠汯牡挠汥獬的尺寸为硅脱衣

简介：ThisworkpresentsanopticalmethodusingtheMach–Zehnderinterferometer.Weespeciallydiagnoseapurenitrogengassubjectedtoapointtoplanecoronadischarge,andvisualizethedensityspatialmap.Theinterelectrodedistanceequals6mmandthevariationoftheopticalpathhasbeenmeasuredatdifferentpressures:220Torr,400Torr,and760Torr.TheinterferogramsarerecordedwithaCCDcamera,andthenumericalanalysisoftheseinterferogramsisassuredbytheinverseAbeltransformation.ThenitrogendensityisextractedthroughtheGladstone–Dalerelation.Theobtainedresultsareincloseagreementwithvaluesavailableintheliterature.

简介：Weexperimentallydemonstratea16×16reconfigurablynonblockingopticalswitchfabricusingaBenesarchitecture.Theswitchfabricconsistsof562×2Mach–Zehnderinterferometerbasedelementaryswitches,witheachintegratedwithapairofwaveguidemicroheaters.Theaverageon-chipinsertionlossis~5.2dBforbothofthe'all-cross'andthe'all-bar'states,withalossvariationof1dBoverallroutingpaths.Thecrosstalkforallswitchingstatesisbetterthan-30dB.Theswitchingtimeoftheswitchelementisabout22μs.Theswitchingfunctionalityisverifiedbytransmissionofa40Gb∕squadraturephase-shiftkeyingopticalsignal.

简介：阐述了一种由2×2耦合器和3×3耦合器构成的光纤Mach—Zehnder干涉仪（MZI），推导了干涉仪三个输出端光功率的表达式。由于光纤本身的特性，光纤构成的MZI容易受到外界环境的影响，针对这一问题，采用了一种平衡检测相位补偿方法。该方法是通过两个PIN分别对3×3耦合器两路光信号进行接收，并对两路光信号进行差动放大。实验表明该方法可以很好地消除外界环境对MZI干涉效果的影响。

简介：Wepresentanequivalentcircuitmodelforasiliconcarrier-depletionsingle-drivepush–pullMach–Zehndermodulator(MZM)withitstravelingwaveelectrodemadeofcoplanarstriplines.Inparticular,thepartialcapacitancetechniqueandconformalmappingareusedtoderivethecapacitanceassociatedwitheachlayer.ThePNjunctionisaccuratelymodeledwiththefringecapacitancestakenintoconsideration.Thecircuitmodelisvalidatedbycomparingthecalculationswiththesimulationresults.Usingthismodel,weanalyzetheeffectofseveralkeyparametersonthemodulatorperformancetooptimizethedesign.ExperimentalresultsofMZMsconfirmthetheoreticalanalysis.A56Gb/son–offkeyingmodulationanda40Gb/sbinaryphase-shiftkeyingmodulationareachievedusingtheoptimizedmodulator.

简介：Anultrasensitivemagneticfieldsensorbasedonacompactin-fiberMach–Zehnderinterferometer（MZI）createdintwin-corefiber（TCF）isproposed,anditsperformanceisexperimentallydemonstrated.AsectionofTCFwassplicedbetweentwosectionsofstandardsingle-modefibers,andthenamicrochannelwasdrilledthroughonecoreoftheTCFbymeansoffemtosecondlasermicromachining.TheTCFwithonemicrochannelwasthenimmersedinawater-basedFe3O4magneticfluid（MF）,formingadirectcomponentofthelightpropagationpath,andthensealedinacapillarytube,achievingamagneticsensingelement,whichmergestheadvantagesofanMZIwithanMF.Experimentswereconductedtoinvestigatethemagneticresponseoftheproposedsensor.Thedevelopedmagneticfieldsensorexhibitsalinearresponsewithinameasurementrangefrom5to9.5mTandanultrahighsensitivityof20.8nm/mT,which,toourbestknowledge,is2ordersofmagnitudegreaterthanotherpreviouslyreportedmagneticsensors.Theproposedsensorisexpectedtooffersignificantpotentialfordetectingweakmagneticfields.

简介：利用Hermite—Gauss函数、模式干涉理论以及电场矢量线性叠加方法，分析了高阶模经光纤Mach—Zehnder干涉仪后的输出光场的空间干涉现象，得出了两个高阶模之间干涉光场的公式，计算出了双模光纤中各模式之间空间干涉的光场。数值仿真结果表明二阶模之间的干涉光场是两个相同的圆形光斑，而基模和二阶模之间的干涉光场是两个不等大的圆形光斑。

简介：Wedemonstrateanovelhigh-accuracypost-fabricationtrimmingtechniquetofine-tunethephaseofintegratedMach–Zehnderinterferometers,enablingpermanentcorrectionoftypicalfabrication-basedphaseerrors.Theeffectiveindexchangeoftheopticalmodeis0.19inourmeasurement,whichisapproximatelyanorderofmagnitudeimprovementcomparedtopreviousworkwithsimilarexcessopticalloss.Ourmeasurementresultssuggestthataphaseaccuracyof0.078radwasachievablewithactivefeedbackcontrol.