多泵浦拉曼光纖放大器的研究與制作.pdf

1、復(fù)旦大學(xué)碩士學(xué)位論文多泵浦拉曼光纖放大器的研究與制作姓名：沈駿申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：蔣鳳仙20040519【摘要】摘2AbstractWiththedevelopmentofthesocietytherequirementforlargevolumeandhighspeedcommunicationisincreasingdaybyday.Todaythetechnologyofdopedwavelengthd

2、ivisionmultiplexinginopticalcommunicationisdevelopedquicklytomeetthelargecapabilityofthebasicopticalnetworkandtheFiberAmplifierswithwidebandisbecomingmoreimportant.ThetraditionalErbiumdopedfiberamplifiers(EDFA)isonlyfor1

3、550nmwindowwiththefmitationof30nmbandwidth.ThisthesismainlydiscussestheFiberRomanAmplifiers(FRA)withmoretitan80nmgainspectrumbyusingmultiwavelengthspumpswhichisincludingmodelingintheorygainoptimizingsystemdesignsamplerea

4、lizingandtestinginthewholeprocessofresearchandproducing.SeveraltopicsontheoryresearchoftheFRAaremotionedinthethesis.FirstlytheprincipleoftheRamanscateringisanalyzed.ThegainofaRamanamplifierwithsinglepumpisworkedoutbasedo

5、nthetransmissionequations.Theresultingequationsformultipumpingandmultichannelareresolvednumericallyandarecomparedwiththeexperimentalresultsinotherpapersand(lieaffectionofthegainsaturationisconcerned.Thewavelengthsandpowe

6、rsofthepumpsareoptimizedforseveralkindoffiberbyusinggeneticalgorithmtorealizethegainflateningwhichprovidestheguidanceforthegainflatening.Aftertheoptimizationofthepumpingparametersthethesisintroducesthedesignoftheopticall

7、inkandthecontrolsystemoftheFRArespectively.Thestyleofpumpcouplingismainlydiscussedintheopticallink.Withtheintegrationoftheoptimizationintheoryandthemeansofptunpcoupling8pumpsparametersandtherelativeopticallinkaredecidedf

8、orsinglemodefiber(SMF)anddispersioncompensationfiber(DCF).Eachpumplaserhasitssubsysteminwhichtheoperationtemperatureanddrivingcurrentarecontrolledinanaloganddigitalrespectively.Themat門，ystemcontrolledbyoneMCUtakescharges

9、ofcommunicatingwith8subsystemsbesidesshowingandsetingtheirworkstates.TheamplifiersystemistestedandanalyzedwhichisincludingtheoutputpowerofeachpumplasertheinsertlossgainspectrumandnoiseoftheFRAandthegaincoefficientoftheme

10、diums.AnalyzingthediferencebetweenthemodelingandthetestingresultsfromtheFRAthethesisimprovesthemodelingintheorytogetthecoherencewiththepracticalresults.AsummaryisputforwardKeywords:FiberRamanAmplifiersGainflatteningGenet