通讯行业--光模块培训

OpticalTransceiversAuthor:Sujing2010.08.05DefinitionandFunctionOpticalmoduleisthedevicewhichconvertercoopersignaltoopticalsignal,andviceversa.Itisthemaindeviceinopticaltelecommunication.OpticaltelecommunicationsystemStandarddigitalopticalsystemThemostsimplyopticalsystemOpticalTransceiversSurvey:Aopticalmodulecombinedby3parts:OSA,electronicdeviceandopticalconnector.光发射部分由驱动电路、控制电路（如APC、ATC)、光源三部分构成，具有发射禁止和监视输出等功能。光接收部分主要由PIN-TIA前放组件和主放电路两部分组成，并具有无光告警(LOS)功能。TelecommunicationnetSeewhereituse.？FTTX,FTTH，FTTP……Fiber-to-the-x（FTTx）(FTTx,x=Hforhome,Pforpremises,CforcurbandNfornodeorneighborhood)ClassificationbytransmissionmediumSinglemodetransceiverMultimodetransceiverFiberstructureThemaincontainoffiberishighpuritySiO2.Andwithsomeothermaterialswithveryfewquantity,inordertoenhancethereflection.MultimodeFiberTwostandardofMultimodefiberis62.5/125µmand50/125µm；62.5&50referstothediameterofferrules.125refersthediameterwithcoating.Multimodefiberonlyuseonlesscapacityandshortdistancetransmission.SinglemodeFiberWhenFerrulesdiameterisbetween5~10µm(9/125),thefibercanonlyallowonemethodtransmission,soSMfibernothastheproblemofChromaticdispersion,itspeciallyuseinhighercapacityandlongdistancetransmission.TransmissionformofSMandMMfibergradedindexmultimodefiberstepIndexmultimodefiberSMFiberTransceiverPrinciplemapTransmitterPECLinput（lowspeed）CMLinput（highspeed）LasermodulatorTempcompensationelectricitycircuitDatainputLaserLaserdriverandAPCElectricitycircuitVccDDMMonitoryinput/outputReceiverLPFRestrictionamplifierSignalelectricitycircuitPDDataoutputDDMPECLbufferFirstputbufferTypesofTransceiverBypackage:1X9、SFF、GBIC、SFP、SFP+、XFP、X2、XENPAK、PON…...Products：SFPSFP---SmallFormFactorPluggable,alsonamedmini-GBIC.TheadvantageofSFPishotpluggable,smallsize,andmetalcasing.Products：1×9Plasticcasing,9PINonthebottom,mainlyuseontheproductionofMediaconverterandVDOmultiplexor.SFFSmallFormFactor,metalcasing,2x5or2x10PINonthebottom,mainlyuseonSDH,SONET,fastEthernetandFiberChannel.GBICGigabitInterfaceConverter,metalcasing,mainlyuseonGigabitEthernetswitch,hotpluggable.XFP10GigabitSmallFormFactorPluggable，Metalcasing,hotpluggable,applicantsin10Gopticaltelecommunication.X2X2,Metalcasing,hotpluggable.10GEthernet.XENPAKXENPAK:Metalcasing,hotpluggable,10GEthernet.PONPON--passiveopticalnetwork.ThereareEPONandGPON；EPONbasedonIEEE802.3ah，GPONbasedonITU-TG.984.SofarEPONismatureandGPONisstillindeveloping,(GEPONisEPON)PONONUOLTONUisopticalnetunit,isenduserdevice,OLTisopticallineterminal,isbureauunit.GPON:GigabitPON;EPON:EthernetPONGE-PON:GigabitEthernetPONPONApplicationPON:PassiveOpticalNetworksAPON:ATMPON;BPON:BroadbandPON;InternalstructureoftransceiversSFPXFPTypesofSFP(2)Byopticalport.DualfiberSFP,BIDISFP,CopperSFPDualfiberSFPDualLCconnectorEachfiberneedbothonTXandRXMostpopular.BIDISFPSingleLCorSCconnectorSavefiberTXandRXhastwodifferentwavelength(usually1310/1550and1550/1310)Mustbepairs(1550Tx/1310Rx&1310Tx/1550Rx)CopperSFPSingleRJ45portsUTPCabletransmission.TypesofSFPByDDMWithDDMWithoutDDMDDM=DigitalDiagnosticMonitoringDDMSFPandNoDDMSFParesamelookingfrominterface.Onlydifferininternalelectricitycircuits.DDMNoDDMSFPCANNOTupgradetoDDMSFPDDMDDMinformationEEPROMOpticalsubmaterialsTXside：LED、VCSEL、FP、DFB、CWDM、DWDM,EML.DMLRXside：PIN-TIA、APDTOSA(TXopticalsub-assembly)TOSAApplicationDatabasewavelengthLaserOpticalportPINSDH/SONET155M622M1.244G2.488G850nmVCSELLC/SCMale/Femal1310nmFP/DFB1550nmGBE1.0625G850nmVCSEL1310nmFP/DFB1550nmFC1.0625/2.125G850nmVCSEL1310nmFP/DFB1550nmCWDM155M~2.67G1270~1610nmFP/DFBDWDM155M~2.67G1563.05~1528.77nmDFB10G(SDH,Ethernet,FCshared)9.953~10.709G850nmVCSEL1310nmFP/DFB1550nmTXOSA(VCSEL：VerticalCavitySurfaceEmittingLaser):850nm,ShortReach(FP：Fabry-Perot)Laser:1310nm，IntermediateReach(DFB：DistributedFeedback)Laser:1310nmand1550nm,LongReachROSATypeROSAApplicationDatabaseWavelengthChipFiberportPINSDH/SONET155M622M1.244G2.488G850nmGaAsFor850nmInGaAsFor1310/1550PIN-TIAForShortDistanceAPD-TIAForLongDistanceLC/SC4pinForPIN-TIA5pinsForAPD-TIA1310nm1550nmGBE1.0625G850nm1310nm1550nmFC1.0625/2.125G850nm1310nm1550nmCWDM155M~2.67G1270~1610nmDWDM155M~2.67G1563.05~1528.77nm10G(SDH,Ethernet,FCshared)9.953~10.709G850nm1310nm1550nmRXOSA(PIN：“p-type”-intrinsic-“n-type”):CheaperandEasier(APD：AvalanchePhotoDiode):MoresensitiveOSAStructure耦合FiberConnectorsLCSCFCSTLC-LCSC-SCBIDImaterials,BOSAPluggablePigtailsMSA-多源协议------指定电接口和机械接口的定义GBICMSA(SFF-8053Rev5.5)•SFFMSA•SFPMSA•SFF-8472Rev9.3(DigitalDiagnostic)•XFPMSA(SFF-8077iRev4.0)•XENPAKMSA•300-PINMSA(Edition4)指定电接口和机械接口的定义GigabitEthernetprotocol----definiteopticalport•IEEE802.3-2002(General)•IEEE802.3ah(E-PON)•IEEE802.3ab(10/100/1000Base-T)•IEEE802.3ae(10GE)同步数字系统与同步光纤网络协议------指定光接口定义ITU-TG.957(STM-1,STM-4,STM-16SDHopticalinterface)•ITU-TG.958(SDHsystembasic,includingjitterrequirement)•ITU-TG.691(10GSDH,STM-64)•ITU-TG.959(OTN)•TelcodiaGR-253(SONET:SYNCHRONOUSOpticalNetworks)PON-----OpticalportDefinition•ITU-TG.983.x(APONandBPON)•ITU-TG.984.x(GPON)•IEEE802.3ahD3.1(EPON)10G-----Optical