融入火災(zāi)預(yù)警功能的光纖無源接入網(wǎng)實(shí)現(xiàn).pdf

1、電子科技大學(xué)碩士學(xué)位論文融入火災(zāi)預(yù)警功能的光纖無源接入網(wǎng)實(shí)現(xiàn)姓名：補(bǔ)沖申請學(xué)位級別：碩士專業(yè)：光學(xué)工程指導(dǎo)教師：饒云江20100501AbstractFiberopticSensorisanewmemberofthesensorfamilyItissensitive，accurate，adaptablecompactandintelligentThearchitectureusestheFiberBragggratings(FBGs)w

2、imthes鋤ecentralwavelengthandlowreflectivity髂sensorsSensingsignalswillbeintegratedintotheEPONsystemwithoutchangingit’sarchitectureBesidesweuseOTDRtechnologytopositionThissensorsystemwillhavegoodapplicationinthe?！拷怼縭eQuasi

3、distributedsensingnetworkscanprovideValueaddedProvisionwithlowcostAnovelpassiveopticalaccessnetworkcapableofprovidingfirealarmingserviceshaSproposedinthisprojectWhichmakesPONtobeaIntegratedServiceDigitalNetwork(ISDN)with

4、faultlocation，andsecuritymonitoringfunctionsWealsoimprovedthedemodulationmethod，inorderteducethecostwhichhavepavedthewayforthecommercializationofthesystemMaintasksareasfollows：1Proposedandanalysisedanovelpassiveopticalac

5、cessnetworkcapableofprovidingfirealarmingservices；2Didsomeexperimentsonthepassiveopticalaccessnetworkwhichcapableofprovidingfirealarmingservices，testeditsfireprotectionpropertiesandobservedthewh01esystem，sstabilitySystem

6、’sresponsetimeislessthan1second，anditsspatialres01utionare50meters，monitoringscopearemorethan5kmAlsoit’Sfireprotectiondistancearemorethan5kmwithlessthan70sresponsetime；3PresentsedanewtypeofFBGwavelengthdemodulationsystem

7、toimprovethesystemwithdemodulationaccuracyof10pmandhighstabilityWeachievedalow—costfiberopticpassivevalue—addedservicesaccessnetwork；4Completedthesystem’Ssoftwarecomponents，andimplementedthesystems；5CompletedthePRCteleco

8、mmunicationsindustrystandards：IntelligentPassive(岫ticalAccessNetworkCapableofProvidingFireAlarmingServicesThestandardhas晰entlVsllbmi釷edtotheChinaCommunicationsStandardsAssociationTheprojectisdiscussingKevwords：paSsiveopt