基于FBG的微波光子滤波器的分析和设计

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1、北京交通大学硕士学位论文基于FBG的微波光子滤波器的分析和设计姓名：万沙沙申请学位级别：硕士专业：光通信与移动通信指导教师：裴丽20080501ABSTRACTABSTRACT：PhotonicMicrowavefilter(PMF)carlachievefilteringmicrowavesignalsinopticaldomainwithoutcomplicatedandexpensiveEO／OEconversion．SoPMFplaysanimportantroleinROFsystem．FBGha

2、sagoodperformanceinwavelengthselectionandfiltering．PMFwithuniquecharacterscanbebuildediningeniouswaybyemployingFBGTherefore,PMFbased011FBGbecomesahotspotinthedomainofMicrowavePhotonics．Inthispaper,wetakefhlladvantageofthewavelengthselectionofFBGtoanalysean

3、ddesignPMEThemainworkandinnovativepointsareasfollows：1．，nleadvantagesanddisadvantagesofmicrowavefiltersareanalyzedandcompared．Allkindsofdomesticandf．0rei弘PMFstructuresbasedonFBGaresummedup．AnewstructureoftunablePMF、jIriⅡlhigllQisproposed．2．TheimpactsoftheF

4、BGparametersonspectrumareanalyzedbyusingnumericalsimulationmethod．FBGisusedasthebasicfilteringdevicetodesignPME朊bringforwardseveraladvancedstructures：resonancecavityharmonicssuppressionPMF,tunablePMF,flat-toppassbandresponsePME3．DIRECTglobaloptimizationalg

5、orithmisusedindesigningPMFthefirsttime．WeemployClanguagetoachieveDIRECTalgorithmandMatlablanguagetosimulatetheamplituderesponses．necharactersofPMFwithpositive，negativeandsymmetricaltapcoefficientareanalyzedrespectively．Thenthedesignisoptimized．Shape·factor

6、Callbeachieved1．3180．111esimulationresultsshowthatthismethodisfeasibleandeffective．4．BasedOlltheprincipleofpolarizationmaintainingchirpedfibergrating,microwavesignalsusedinROFsystemisgenerated．BychangingthelengthsofM—Zinterferometer’twoarmsandparametersofc

7、hirpedgrating,suchasthedispersioncoefficient，microwavefrequencyCanbetunedfrom0toseveralhundredGHz．KEYWORDS：RadioOverFiber(ROF)；FiberBraggGrating(FBG)；PhotonicMicrowaveFilter(PMF)；DⅡtECTalgorithmCLASSN0：TN929．11学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权

8、北京交通大学可以将学位论文的全部或部分内容编入有关数据库进行检索，并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借阅。同意学校向国家有关部门或机构送交论文的复印件和磁盘。(保密的学位论文在解密后适用本授权说明)学位论文作者签名：1孑必竹签字日期：少唱年占月，2，日翩繇象矽签字日期：枷参年莎月／阳独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成果，除了文中特别加以标注和致谢之处