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1、optic-fibercommunication;fiber-opticcommunicationsopticalfibercommunicationsFromtheopticalcommunicationtalentshowingitself,hasbecomeoneofthemainpillarsofmoderncommunicationinthemoderntelecommunicationsnetwork,playadecisiveroleinthe.Opticalfibercommunicationasanewtechnology,itsrapiddevel
2、opmentinrecentyears,applicationsbroadrangeofcommunicationsinhistory,butalsotheimportantsymbolofrevolutionofworldnewtechnologyandthefutureinformationsocietyinformationmaintransfertool.Opticalfiberforopticalfiberabbreviation.Opticalfibercommunicationistolightasthecarrierofinformation,with
3、theopticalfiberastransmissionmediumisameansofcommunication.Inprinciple,constitutethebasicelementsofopticalfibercommunicationopticalfiber,alightsourceandalightdetector.Opticalfiberinadditiontothemanufacturingprocess,materialcompositionandopticalpropertiesforclassification,intheapplicatio
4、noftheopticalfiber,usedtouseforclassification,canbedividedintocommunicationandopticalfibersensorwithopticalfiber.Transmissionmediumopticalfiberisdividedintogeneralandspecialtwo,andfunctionaldevicesforopticalfiberreferstotheamplification,shaping,frequencydivider,frequency,modulationandop
5、ticaloscillationfeaturessuchasopticalfiber,andoftenafunctionofthedeviceappearedintheformof.Thecharacteristicsofopticalfibercommunication(1)thecommunicationscapacity,transmissiondistanee;afiberpotentialbandwidthofupto20THz.Thebandwidth,justonesecond,thenhumanatalltimesandinallcountriesal
6、ltextdata・The400Gbit/ssystemhasbeenputintocommercialuse・Theopticallossisextremelylow,inlightwithawavelengthof1.55mnearby,quartzfiberlosslowerthan0.2dB/km,theratioofanycurrenttransmissionmediumlossislow.Therefore,transmissiondistaneecanreachtens,evenhundredsofkilometers・(2)smallsignalint
7、erference,goodsecrecyperformance;(3)resistanttoelectromagneticinterferenee,thetransmissionqualityisgood,theelectriccommunicationcannotsolveallkindsofelectromagneticinterferenee,opticalfibercommunicationisnotonlyaffectedbyallkindsofelectromagneticinterferenee.(4)fiberofsmallsize
