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1、利用共线准相位匹配光学参量产生器的折回特性实现宽带光源的理论研究//.paper.edu.cnTheoreticalstudyofbroadbandsourcebyusingretracingbehaviorofcollinearquasi-phase-matchingopticalparametricgenerator1LuYang,ZhangBai-Gang,ZhaoXin,WangPeng,ZhangTie-Li,JiFeng,andYaoJian-QuanCollegeofPrecisionInstrumentandOpto-ElectronicsEngin
2、eering,InstituteofLaserandOptoelectronics,TianjinUniversity,Tianjin3000<#004699'>72,ChinaCooperatedInstituteofNankaiUniversityandTianjinUniversity,Tianjin3000<#004699'>72,ChinaKeyLaboratoryofOptoelectricInformationScienceandTechnology,MinistryofEducation,TianjinUniversity,Tianjin3000<#
3、004699'>72,Chinalu0406@sina4>>zbghj@yeah.netAbstractAccordingtotheconceptofphasematchingbandwidththebandwidthofbroadbandsourcebyusingretracingbehaviorofcollinearquasi-phase-matching(CQPM)opticalparametricgenerator(OPG)inperiodicallypoledlithiumniobate(PPLN)ispresentedfirstly.Comparingt
4、hevariouspumpwavelengthsweobtainthepumpingconditionandparametersofPPLNtorealizethebroadbandsourcenear1550nmintheCQPM-OPG.Intheorywepresenttheoptimumpumpwavelengthandthemaximumidealbandwidthrangetobe940.<#004699'>75nmand14<#004699'>75nm~1681nmrespectively.Thestudyofthisissuewouldprovide
5、theoreticalbasistorealizethebroadbandsourceinthefuture.Keywords:collinearquasi-phase-matching(CQPM),periodicallypoledlithiumniobate(PPLN),retracingbehavior,opticalparametricgeneration(OPG)1IntroductionBroadbandopticalsourcesareemployedinmanyfieldssuchasamplificationoffibercommunication
6、sandwavelength-divisionmultiplexing(WDM)signalgeneration,opticalcoherencetomographyandspectroscopy.ForWDMcommunications,conventionalerbium-dopedfiberamplificationandstimulated1ProjectsupportedbytheNationalNaturalScienceFoundationofChina(GrantNo.602<#004699'>78001andNo104<#004699'>740<#
7、004699'>71),theMinistryofEducation,thePh.D.ProgramsFoundationofMinistryofEducationofChina(GrantNo20020056001),TianjinmunicipaltechnologicaldevelopmentplanningandtheOutstandingDoctorateDissertationofTianjinUniversity[2001]01.-1-//.paper.edu.cnRamanscatteringinfiberareusuallyusedtoreal
