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基于半导体光放大器的光电振荡器相位噪声抑制的研究 Title:ResearchonPhaseNoiseSuppressionofSemiconductorOpticalAmplifier-BasedOptoelectronicOscillators Abstract: Thephasenoiseofoptoelectronicoscillators(OEOs)playsacrucialroleindeterminingtheirperformance,especiallyinapplicationsrequiringhigh-frequencystability.Thisresearchfocusesontheinvestigationofphasenoisesuppressiontechniquesinsemiconductoropticalamplifier(SOA)-basedOEOs.Theprimaryobjectiveistoenhancethephasenoiseperformancebyunderstandingthesourcesofphasenoiseandexploringstrategiestomitigatetheireffects.ByanalyzingnewapproachesandadvancementsinOEOarchitecture,thisstudyaimstoprovidevaluableinsightsintoachievingimprovedphasestabilityinoptoelectronicsystems. Keywords:Optoelectronicoscillators,phasenoise,semiconductoropticalamplifiers,phasestability. 1.Introduction Optoelectronicoscillatorshavegainedsignificantattentionduetotheirabilitytogeneratehigh-frequency,stablemicrowavesignals.Theperformanceoftheseoscillatorsissignificantlyaffectedbyphasenoise,whichlimitstheirapplicationsinvariousfields,includingtelecommunications,radarsystems,andprecisionfrequencygeneration.ThispaperpresentsaninvestigationintothephasenoisesuppressiontechniquesinSOA-basedOEOs. 2.SourcesofPhaseNoiseinOEOs PhasenoiseinOEOsisprimarilycausedbytwosources:thermalnoiseandnonlineareffects.Thermalnoisearisesduetotheinherentopticalandelectronicnoisepresentinthesystem.NonlineareffectsareattributedtothenonlinearbehaviorofdevicessuchasSOAs.Understandingandquantifyingthesesourcesareessentialfordevisingeffectivephasenoisesuppressionstrategies. 3.SemiconductorOpticalAmplifiersinOEOs SemiconductoropticalamplifiersarewidelyusedinOEOsduetotheircompactsize,highgain,andlowpowerconsumption.However,SOAsintroducenonlineareffectsthatcontributetophasenoise.BystudyingthecharacteristicsandlimitationsofSOAs,researcherscandeveloptechniquestomitigatetheirdetrimentalimpactonphasenoiseperformance. 4.PhaseNoiseSuppressionTechniques 4.1.ActiveCancellationTechniques Activecancellationtechniquesinvolvethe