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采用偏振合束技术的高功率光纤耦合LD无致冷封装模块研究 Title:StudyonHigh-PowerFiber-CoupledLDModulewithPolarization-MultiplexingTechniqueforUncoolingPackaging Abstract: Thedemandforhigh-powerlaserdiode(LD)modulesthatcanefficientlycouplelightintoopticalfiberswithoutactivecoolinghasbeensteadilyincreasing.Thisresearchaimstostudyanddesignahigh-powerfiber-coupledLDmoduleusingpolarization-multiplexingtechnique,whichcansignificantlyenhancethecouplingefficiencyandmaintainstableoperationwithouttheneedforactivecooling. 1.Introduction(200words) Laserdiodes(LDs)havebecomeoneofthemostimportantlightsourcesinvariousapplicationssuchastelecommunication,medicalequipment,andindustrialprocessing.However,high-powerLDsoftenfacethechallengeofexcessiveheatgeneration,whichrequiresactivecoolingsystemstomaintaintheirstabilityandlifespan.Passivecoolingtechniques,suchasusingheatsinksorthermoelectriccoolers,arenotalwaysefficientandintroduceadditionalcomplexity. 2.Polarization-MultiplexedCoupling(200words) Thepolarization-multiplexingtechniquehasemergedasapromisingsolutiontoefficientlycouplehigh-powerLDsintoopticalfiberswithouttheneedforactivecooling.ThistechniqueutilizesthetwoorthogonalpolarizationstatesoflighttocombinethepowerofmultipleLDs,whichenhancestheoutputpowerandcouplingefficiency. 3.DesignoftheFiber-CoupledLDModule(300words) Thefiber-coupledLDmodulecomprisesseveralkeycomponents,includingtheLDchip,polarizationbeamcombiner,fibercouplinglens,andheatdissipationstructure.TheLDchipiscarefullyselectedtoensurehighpower,stability,andreliability.Thepolarizationbeamcombinercombinesthelightoutputfromdifferentpolarizationstatesintoasingleoutputbeamwithhighpowercouplingefficiency.Thefibercouplinglensfocusesthecombinedbeamintothesingle-modefiber,ensuringefficientlighttransmission.TheheatdissipationstructureisdesignedtoeffectivelydissipatetheheatgeneratedbytheLDchipwithoutactivecooling. 4.ExperimentalSetupandResults(300words) Theexperimentalsetupincludesthehigh-powerLD,polarizationbeamcombiner,fibercouplinglens,andheatdissipatio