基于高非线性光纤的多级四波混频效应及其应用研究-光电信息工程专业论文.docx

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基于高非线性光纤的多级四波混频效应及其应用研究-光电信息工程专业论文.docx

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基于高非线性光纤的多级四波混频效应及其应用研究-光电信息工程专业论文

equations,westudythestaticcharacteristicofthesatellitewave,andderivetheanalyticexpressiondescribingthesatellitewaveevolvingovertheopticalfiber.Second,we mimicthecharacteristiccurvefordescribingtherelationbetweenthesatellite-wavepowerandtheinjected-signal-wavepower,whichconformstothetransmissionfunctioncurveof2Rregenerator,andbyoptimizingtheinjectedwavelengthandpower,togetherwiththeopticalfiberlength,wecanobtainthestate-of-the-arttransmissionfunctioncurve.Atlast,westudythedynamiccharacteristicofthe2Rregenerator,andsuccessfullyreshapeandre-amplifythesatellite,whichnotonlysuppressestheamplifiedspontaneousemission(ASE)noiseatthespaceandmarkofthesatellitewave,butalsoimprovesthequalityfactor(Q)andtheextinctionratio(ER).WestudytheHNLF-basednovelnotchfilter.Withtheaidofthecoupled-waveequations,weobtaindifferentopticalspectraforthenotchfilterundertheconditionof differentparameters,andimproveitsfilteringcapabilitybyoptimizingtherelatedparameters.Inreality,inordertoeliminatetheuselesssignal,wejustdecreasethedetuneofthepumpandthesignalwaves,aswellasjudiciouslytuningthepumppowertomeetthemostoptimizedphase-matchingcondition.WestudythephaselockingeffectbasedontheHNLF.Wefirstintroducetheconceptionofthephase-clampingeffect,whichcanbeutilizedtorealizethephaselockingfor thetwophase-incorrelationwaves.Weyieldtheanalyticexpressionfortheoutputwavephasefromthecoupled-waveequations,and confirm thatthephasedifferenceisconstantaslongas weneglecttheFWMterms.Second,weextendthebeating-frequencytheory,andderivetheautocorrelationtraceandpowerspectraldensityfunctionwhenNwavesbeatwitheachother. Inexperiment,weproposetwoschemestoconfirm theavailabilityofthephaselockingwhen twoorthreephase-incorrelationwavesinteractwitheachother,respectively,andanalyzetherelationbetweenthestablecharacteristicofthebeat-noteandtheinjectedpowerorthepolarizationstate.WestudytheUWBgenerationbasedonthefiberopticalparametricamplification(FOPA).ByusingtheHNLF-basedoptical-parametric-attenuationeffectandgain-oversatura-tionef