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1、OpticalTransceiversAuthor:Sujing2010.08.05DefinitionandFunctionOpticalmoduleisthedevicewhichconvertercoopersignaltoopticalsignal,andviceversa.Itisthemaindeviceinopticaltelecommunication.OpticaltelecommunicationsystemStandarddigitalopticalsystemThemostsimplyopticalsystemOpticalTransceiversSurvey:Aop
2、ticalmodulecombinedby3parts: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)Cl
3、assificationbytransmissionmediumSinglemodetransceiverMultimodetransceiverFiberstructureThemaincontainoffiberishighpuritySiO2.Andwithsomeothermaterialswithveryfewquantity,inordertoenhancethereflection.MultimodeFiberTwostandardofMultimodefiberis62.5/125µmand50/125µm；62.5&50referstothediameterofferrul
4、es.125refersthediameterwithcoating.Multimodefiberonlyuseonlesscapacityandshortdistancetransmission.SinglemodeFiberWhenFerrulesdiameterisbetween5~10µm(9/125),thefibercanonlyallowonemethodtransmission,soSMfibernothastheproblemofChromaticdispersion,itspeciallyuseinhighercapacityandlongdistancetransmis
5、sion.TransmissionformofSMandMMfibergradedindexmultimodefiberstepIndexmultimodefiberSMFiberTransceiverPrinciplemapTransmitterPECLinput（lowspeed）CMLinput（highspeed）LasermodulatorTempcompensationelectricitycircuitDatainputLaserLaserdriverandAPCElectricitycircuitVccDDMMonitoryinput/outputReceiverLPFRes
6、trictionamplifierSignalelectricitycircuitPDDataoutputDDMPECLbufferFirstputbufferTypesofTransceiverBypackage:1X9、SFF、GBIC、SFP、SFP+、XFP、X2、XENPAK、PON…...Products：SFPSFP---SmallFormFactorPluggable,alsonamedmini-GBIC.TheadvantageofSFPishotpluggable,smallsize,andmetalcasing.Products：1×9Plasticcasing,9PI
7、Nonthebottom,mainlyuseontheproductionofMediaconverterandVDOmultiplexor.SFFSmallFormFactor,metalcasing,2x5or2x10PINonthebottom,mainlyuseonSDH,SONET,fastEthernetandFiberChannel.GBICGigabitInterfaceConverter,m
