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ID:37492226
大小:2.78 MB
页数:110页
时间:2019-05-24
《高功率光纤激光器及其相干合成技术的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、南开大学博士学位论文高功率光纤激光器及其相干合成技术的研究姓名:贾秀杰申请学位级别:博士专业:光学指导教师:董孝义20070401摘要主振荡功率放大(MOPA);(3)利用饱和吸收体,进行了被动调Q掺镱光纤激光器的研究。最后参与完成了全国产化大功率掺镱双包层光纤激光器样机的研制,并通过了专家鉴定。关键词:光纤激光器,大模面积双包层光纤激光器,光纤激光器的相干合成技术,主动锁模光纤激光器相干合成,有理数谐波锁模光纤激光器,脉冲幅度均衡,暗脉冲,MOPA放大技术,全国产化大功率光纤激光器,被动调Q光纤激光器。博士期间参加科研项目情况I
2、.DWDM通信系统用多波长全光纤激光器,天津科委基金项目(013601811):2.双包层光纤光子器件及其应用研究,国家自然科学重点基金项目(60137010);3.基于微结构光纤的光电子功能器件的创新与研究,国家科技部973计划项目(2003CB314906).4、’⋯‘。j一’,“短脉冲双包层光纤相干激光光源的研究”,(51438020205J、Ⅳ1501)VAbstract/山stractInformationexplosionstimulatesthedramaticincreaseofglobaltelecommunic
3、ationserviceandbringsforwardhighel"requirementsforthecapabilityoftelecommunicationnetworkontransferinformation.DWDMandOTDMareeffectiveapproachestorealizetheexpansionofopticaltelecommunicationsystem,andthegenerationsofmulti—wavelengthsignalandhighlyrepeatedfrequencysup
4、er—short-pulsearethetwocorrespondingkeytechnologies.Accordingtotherequirementsfrommilitary,industrymachiningandspacetelecommunication,itbecomesmoreurgenttoimprovetheoutputpowerofopticalfiberlaser.Thisdissertationconcentratesonin—depthresearchonthecoherentcombinationte
5、chnologyofthedouble—claddingfiberlasersandtheErbium-dopedsing]le-modefiberlasersbothintheoryandexperiment.Besidesthese,multi—wavelenghfiberlasersanditswavelength—narrowedmechanismarealsoinvestigated.Somemeaningfulresultsareachieved,whichinclude:1.Thefunctionof3dBfiber
6、loopmirrorfiLM)infinewavelengthpartitionisstudied.Withthistheory,anovelnarrowlinearband,dual-wavelengthswitchableEr-dopedfiberlaserisrealized.2.AnunpumpedEr—dopedfiberandbroadbandfiberBragggrating(FBG)、Ⅳitllllighrefleetivityisserved∞anauto-trackingfilter.wherethespace
7、hole-burningeffectappearswhenthelasersignaltravelsandformsstandingwave,thusthegenerationofmulti—longitudinal-modeissuppressed.ThenthehighbirefringencefiberloopmirrorfHiBi—FLM)isintroducedtoact嬲comb-likedwavelengthfilter.Becauseoftheeonvolvingeffectbetweenauto-tracking
8、filterandthecombfilter,thenarrowlinearband,multiwavelengthopticalfiberlaserisacquked.3、Adesignofintroducingapolarizerintothe
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