Fiber Optic Fundamentals纤维光学原理.ppt

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1、FiberOpticFundamentalsPreparedforTheHandbookofFiberOpticDataCommunicationThirdEditionDr.CasimerDeCusatisIBMCorporationKeyConceptsBriefHistoryofOpticalFiberTechnologyMultimodeandSingle-modeFiberBasicFiberOpticLinkConceptsandApplicationstotheComputerIndustryOpticalfibervsCopperChallen

2、ges:ConnectivityandInteroperabilityElectricalConnectorElectricalConnectorTransceiverTransceiverFiberOpticCableOpticalConnectorOpticalConnectorOpticalPortOpticalPortNewertechnologiesinvolvinghigherdatarates,smallerformfactors,higherportdensities,pluggability,andparallellinksareshowin

3、ganincreasedneedtofocusonconnectivityandinteroperabilityissuesAfailureanywherealongthislinkwillcausetheentirelinktofailConclusionsHistorically,thefundamentalconceptsoffiberopticsdatebackto1927Multimodefibersuseacorediameterofeither50or62.5micronsShortwavelengthlasersShorterdistances

4、(fewhundredmeters)Single-modefibersuseacorediameterof9-10micronsLongwavelengthlasersLongerdistances(severalkilometers)Abasiclinkiscomposedofopticaltransceivers,cables,andconnectorsFiberopticsiswidelyusedforbothvoiceanddatacommunication,andisgraduallybecomingamorefundamentalpartoffut

5、urecomputerarchitectures