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Chapter5SystemDesignPrincipleChapter52OEI,HUSTChap.5SystemDesignPrinciple5.1SystemArchitectures5.2DesignGuidelines5.3ExamplesofFiberNetworkChapter53SOEI,HUST5.1.1Fiber-Optic

Network

&OurDailyLifeChapter54SOEI,HUSTSDHDataCenterSDHSDHSDHDWDMDWDMAccessBackboneAccessMetroMetro5.1.2Fiber-OpticNetworkArchitecturesChapter55SOEI,HUSTBackbone5.1.2Wide-Area

Network——WAN(廣域網(wǎng))WAN:coversrelativelylargergeographicalarea,suchasastate,province,orcountryDistance:>100km“八縱八橫”骨干網(wǎng)Full

MeshPartialMesh

Network

Topologies:Chapter56SOEI,HUST5.1.2MetropolitanAreaNetwork

——MAN(城域網(wǎng))DWDMMetroMAN:builtforcitiesortownstoprovideahighdataconnectionDistance:10km~100km

Network

Topologies:TreeRingLondon

MAN

@1999Chapter57SOEI,HUST5.1.2Local-Area

Network——LAN(局域網(wǎng))SDHDataCenterSDHAccessLAN:restrictedtosmallerphysicalarease.g.alocaloffice,school,orhouseDistance:<10km

Network

Topologies:StarCommon

BusHUST校園網(wǎng)示意圖Chapter58SOEI,HUST5.1.2OpticalAccessNetwork

——

OAN

(光接入網(wǎng))光分配網(wǎng)ODN局端設(shè)備OLT用戶終端ONUOAN:

LastmiletoONUDistance:<10kmChapter59OEI,HUSTChap.5SystemDesignPrinciple5.1SystemArchitectures5.2DesignGuidelines5.3ExamplesofFiberNetwork5.2.1P2PFiberLinkChapter510SOEI,HUSTEachtopologiesarebasedonbasicP2Pfiberlinks:P2Pfiberlinkswithperiodiclosscompensationthrough(a)OEOregenerators,whichconsistsofareceiverfollowedbyatransmitter,and(b)opticalamplifiers.5.2.2PowerBudgetChapter511SOEI,HUSTOpticalFibreConnectorOpticalFibreSpliceOpticalFiberLegendTransmitterTerminalReceiverTerminal5.2.2PowerBudgetChapter512SOEI,HUSTPassiveopticalaccessnetwork(noamplifier)ChinaUnicom中國聯(lián)通FTTH(EPONPX20):PowerBudget(Max.Loss):25dBSplittingratio:1:32,SplittingLoss:17.7dBSystemmargin:1dBFiberadapter:8pcs,Loss:0.5dB/pcFibersplice:4points,Loss:0.08dB/pointFiberLoss:0.36dB/kmLossLimited!Coveredrangecanbeenlargedbydecreasingthesplittingratioinremoteareas.Maximumcoveredrange:5.2.3Rise-timeBudgetChapter513SOEI,HUSTTherise-timeofRCcircuit,Tr5.2.3Rise-timeBudgetChapter514SOEI,HUSTTransmissionbetweendatacenters(noDCF)Fibertype:SMF,D=17ps/nm/kmDataformat:10Gb/sRZ,Δλ~0.1nmTx&Rxrisetime:20psMaximumrise-time:Maximumnon-compensateddistance:DispersionLimited!Chapter515OEI,HUSTChap.5SystemDesignPrinciple5.1SystemArchitectures5.2DesignGuidelines5.3ExamplesofFiberNetwork5.3HowtomakeanoverseaWeChatCallChapter516SOEI,HUST1ststep:connectedtofiberinternetBeijingNewYorkFiberconnectionTransmitter:Receiver:5.3HowtomakeanoverseaWeChatCallChapter517SOEI,HUST2ndstep:pathselectionviaROADM(networktechnology)ROADM3rdstep:connectedandfibertransmissionSubmarinefibercable:Distance:30000km(fr

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