1、SPCIFICATION TECHNIQUE CEI IEC TECHNICAL SPECIFICATION TS62033 Premiredition Firstedition 200003 Uniformitdelaffaiblissementdans lesfibresoptiques Attenuationuniformityinopticalfibres Numroderfrence Referencenumber IEC/TS62033:2000Numrosdespublications Depuisle1erjanvier1997,lespublicationsdelaCEI s
2、ontnumrotespartirde60000. Publicationsconsolides Lesversionsconsolidesdecertainespublicationsde laCEIincorporantlesamendementssontdisponibles. Parexemple,lesnumrosddition1.0,1.1et1.2 indiquentrespectivementlapublicationdebase,la publicationdebaseincorporantlamendement1,etla publicationdebaseincorpor
3、antlesamendements1 et2. Validitdelaprsentepublication LecontenutechniquedespublicationsdelaCEIest constammentrevuparlaCEIafinquilreflteltat actueldelatechnique. Desrenseignementsrelatifsladatedereconfir mationdelapublicationsontdisponiblesdansle CataloguedelaCEI. Lesrenseignementsrelatifsdesquestion
4、sltudeet destravauxencoursentreprisparlecomittechnique quiatablicettepublication,ainsiquelalistedes publicationstablies,setrouventdanslesdocumentsci dessous: SitewebdelaCEI* CataloguedespublicationsdelaCEI Publiannuellementetmisjour rgulirement (Catalogueenligne)* BulletindelaCEI Disponiblelafoisaus
5、itewebdelaCEI* etcommepriodiqueimprim Terminologie,symbolesgraphiques etlittraux Encequiconcernelaterminologiegnrale,lelecteur sereporteralaCEI60050: VocabulaireElectro techniqueInternational (VEI). Pourlessymbolesgraphiques,lessymboleslittraux etlessignesdusagegnralapprouvsparlaCEI,le lecteurconsul
6、teralaCEI60027: Symboleslittraux utiliserenlectrotechnique,laCEI60417:Symboles graphiquesutilisablessurlematriel.Index,relevet compilationdesfeuillesindividuelles, etlaCEI60617: Symbolesgraphiquespourschmas. * Voiradressesitewebsurlapagedetitre. Numbering Asfrom1January1997allIECpublicationsare issu
7、edwithadesignationinthe60000series. Consolidatedpublications ConsolidatedversionsofsomeIECpublications includingamendmentsareavailable.Forexample, editionnumbers1.0,1.1and1.2refer,respectively,to thebasepublication,thebasepublicationincor poratingamendment1andthebasepublication incorporatingamendmen
8、ts1and2. Validityofthispublication ThetechnicalcontentofIECpublicationsiskept underconstantreviewbytheIEC,thusensuringthat thecontentreflectscurrenttechnology. Informationrelatingtothedateofthereconfirmation ofthepublicationisavailableintheIECcatalogue. Informationonthesubjectsunderconsiderationand
9、workinprogressundertakenbythetechnical committeewhichhaspreparedthispublication,aswell asthelistofpublicationsissued,istobefoundatthe followingIECsources: IECwebsite* CatalogueofIECpublications Publishedyearlywithregularupdates (Onlinecatalogue)* IECBulletin AvailablebothattheIECwebsite*and asaprint
10、edperiodical Terminology,graphicalandletter symbols Forgeneralterminology,readersarereferredto IEC60050:InternationalElectrotechnicalVocabulary (IEV). Forgraphicalsymbols,andlettersymbolsandsigns approvedbytheIECforgeneraluse,readersare referredtopublicationsIEC60027: Lettersymbolsto beusedinelectri
11、caltechnology ,IEC60417: Graphical symbolsforuseonequipment.Index,surveyand compilationofthesinglesheets andIEC60617: Graphicalsymbolsfordiagrams. * Seewebsiteaddressontitlepage.SPCIFICATION TECHNIQUE CEI IEC TECHNICAL SPECIFICATION TS62033 Premiredition Firstedition 200003 Uniformitdelaffaiblisseme
12、ntdans lesfibresoptiques Attenuationuniformityinopticalfibres Commission Electrotechnique Internationale InternationalElectrotechnicalCommission Pourprix,voircatalogueenvigueur Forprice,seecurrentcatalogue IEC2000Droitsdereproductionrservs Copyrightallrightsreserved Aucunepartiedecettepublicationnep
13、euttrereproduiteni utilisesousquelqueformequecesoitetparaucunprocd, lectroniqueoumcanique,ycomprislaphotocopieetles microfilms,sanslaccordcritdelditeur. Nopartofthispublicationmaybereproducedorutilizedin anyformorbyanymeans,electronicormechanical, includingphotocopyingandmicrofilm,withoutpermissioni
14、n writingfromthepublisher. InternationalElectrotechnicalCommission 3,ruedeVarembGeneva,Switzerland Telefax:+41229190300 email:inmailiec.ch IECwebsitehttp:/www.iec.ch CODEPRIX PRICECODE H2 TS62033 CEI:2000 COMMISSIONLECTROTECHNIQUEINTERNATIONALE _ UNIFORMITDELAFFAIBLISSEMENTDANSLESFIBRESOPTIQUES AVAN
15、TPROPOS 1) LaCEI(CommissionlectrotechniqueInternationale)estuneorganisationmondialedenormalisationcompose delensembledescomitslectrotechniquesnationaux(ComitsnationauxdelaCEI).LaCEIapourobjetde favoriserlacooprationinternationalepourtouteslesquestionsdenormalisationdanslesdomainesde llectricitetdell
16、ectronique.Aceteffet,laCEI,entreautresactivits,publiedesNormesinternationales. Leurlaborationestconfiedescomitsdtudes,auxtravauxdesquelstoutComitnationalintressparle sujettraitpeutparticiper.Lesorganisationsinternationales,gouvernementalesetnongouvernementales,en liaisonaveclaCEI,participentgalement
17、auxtravaux.LaCEIcollaboretroitementaveclOrganisation InternationaledeNormalisation(ISO),selondesconditionsfixesparaccordentrelesdeuxorganisations. 2) LesdcisionsouaccordsofficielsdelaCEIconcernantlesquestionstechniquesreprsentent,danslamesure dupossible,unaccordinternationalsurlessujetstudis,tantdon
18、nquelesComitsnationauxintresss sontreprsentsdanschaquecomitdtudes. 3) Lesdocumentsproduitsseprsententsouslaformederecommandationsinternationales.Ilssontpublis commenormes,spcificationstechniques,rapportstechniquesouguidesetagrscommetelsparlesComits nationaux. 4) Danslebutdencouragerlunificationinter
19、nationale,lesComitsnationauxdelaCEIsengagentappliquerde faontransparente,danstoutelamesurepossible,lesNormesinternationalesdelaCEIdansleursnormes nationalesetrgionales.ToutedivergenceentrelanormedelaCEIetlanormenationaleourgionale correspondantedoittreindiqueentermesclairsdanscettedernire. 5) LaCEIn
20、afixaucuneprocdureconcernantlemarquagecommeindicationdapprobationetsaresponsabilit nestpasengagequandunmatrielestdclarconformelunedesesnormes. 6)Lattentionestattiresurlefaitquecertainsdeslmentsdelaprsentespcificationtechniquepeuventfaire lobjetdedroitsdepropritintellectuelleoudedroitsanalogues.LaCEI
21、nesauraittretenuepour responsabledenepasavoiridentifidetelsdroitsdepropritetdenepasavoirsignalleurexistence. LatcheprincipaledescomitsdtudesdelaCEIestllaborationdesNormes internationales.Exceptionnellement,uncomitdtudespeutproposerlapublicationdune spcificationtechnique lorsquendpitdemaintsefforts,l
22、accordrequisnepeuttreralisenfaveurdela publicationduneNormeinternationale,ou lorsquelesujetenquestionestencoreencoursdedveloppementtechniqueouquand, pouruneraisonquelconque,lapossibilitdunaccordpourlapublicationduneNorme internationalepeuttreenvisagepourlavenirmaispasdanslimmdiat. Lesspcificationste
23、chniquesfontlobjetdunnouvelexamentroisansauplustardaprsleur publicationafindedciderventuellementdeleurtransformationenNormesinternationales. LaCEI62033,quiestunespcificationtechnique,attablieparlesouscomit86A:Fibres etcbles,ducomitdtudes86delaCEI:Fibresoptiques. Letextedecettespcificationtechniquees
24、tissudesdocumentssuivants: Projetdenqute Rapportdevote 86A/500/CDV 86A/540/RVC Lerapportdevoteindiqudansletableaucidessusdonnetouteinformationsurlevoteayant aboutilapprobationdecettespcificationtechnique.TS62033 IEC:2000 3 INTERNATIONALELECTROTECHNICALCOMMISSION _ ATTENUATIONUNIFORMITYINOPTICALFIBRE
25、S FOREWORD 1) TheIEC(InternationalElectrotechnicalCommission)isaworldwideorganizationforstandardizationcomprising allnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectoftheIECistopromote internationalcooperationonallquestionsconcerningstandardizationintheelectricalandelectronicfield
26、s.To thisendandinadditiontootheractivities,theIECpublishesInternationalStandards.Theirpreparationis entrustedtotechnicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmay participateinthispreparatorywork.International,governmentalandnongovernmentalorganizationsliaising withtheIECal
27、soparticipateinthispreparation.TheIECcollaboratescloselywiththeInternationalOrganization forStandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwo organizations. 2) TheformaldecisionsoragreementsoftheIEContechnicalmattersexpress,asnearlyaspossible,an internationalconsensuso
28、fopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentation fromallinterestedNationalCommittees. 3) Thedocumentsproducedhavetheformofrecommendationsforinternationaluseandarepublishedintheform ofstandards,technicalspecifications,technicalreportsorguidesandtheyareacceptedbytheNational Co
29、mmitteesinthatsense. 4) Inordertopromoteinternationalunification,IECNationalCommitteesundertaketoapplyIECInternational Standardstransparentlytothemaximumextentpossibleintheirnationalandregionalstandards.Any divergencebetweentheIECStandardandthecorrespondingnationalorregionalstandardshallbeclearly in
30、dicatedinthelatter. 5) TheIECprovidesnomarkingproceduretoindicateitsapprovalandcannotberenderedresponsibleforany equipmentdeclaredtobeinconformitywithoneofitsstandards. 6)Attentionisdrawntothepossibilitythatsomeoftheelementsofthistechnicalspecificationmaybethesubject ofpatentrights.TheIECshallnotbeh
31、eldresponsibleforidentifyinganyorallsuchpatentrights. ThemaintaskofIECtechnicalcommitteesistoprepareInternationalStandards.In exceptionalcircumstances,atechnicalcommitteemayproposethepublicationofatechnical specificationwhen therequiredsupportcannotbeobtainedforthepublicationofanInternationalStandar
32、d, despiterepeatedefforts,or thesubjectisstillundertechnicaldevelopmentorwhere,foranyotherreason,thereisthe futurebutnoimmediatepossibilityofanagreementonanInternationalStandard. Technicalspecificationsaresubjecttoreviewwithinthreeyearsofpublicationtodecide whethertheycanbetransformedintoInternation
33、alStandards. IEC62033,whichisatechnicalspecification,hasbeenpreparedbysubcommittee86A:Fibres andcables,ofIECtechnicalcommittee86:Fibreoptics. Thetextofthistechnicalspecificationisbasedonthefollowingdocuments: Enquirydraft Reportonvoting 86A/500/CDV 86A/540/RVC Fullinformationonthevotingfortheapprova
34、lofthistechnicalspecificationcanbefoundinthe reportonvotingindicatedintheabovetable.4 TS62033 CEI:2000 CettepublicationatrdigeselonlesDirectivesISO/CEI,Partie3. Lecomitadcidquelecontenudecettepublicationneserapasmodifiavant2003.Acette date,lapublicationsera reconduite; supprime; remplaceparunedition
35、rvise,ou amende.TS62033 IEC:2000 5 ThispublicationhasbeendraftedinaccordancewiththeISO/IECDirectives,Part3. Thecommitteehasdecidedthatthecontentsofthispublicationwillremainunchangeduntil2003. Atthisdate,thepublicationwillbe reconfirmed; withdrawn; replacedbyarevisededition,or amended.6 TS62033 CEI:2
36、000 INTRODUCTION Laffaiblissementliniquedesfibresetcblesoptiquesestmesursurlalongueurcomplte.Il peutvarierdemanirelocalesurlalongueur.Lorsquunelongueurestcoupeenplusieurs sections,laffaiblissementliniquedunesectionpeuttrepluslevquelaffaiblissement liniquedelalongueurdanslaquelleelleatcoupe.Lamesured
37、eluniformit daffaiblissementfournitdesinformationssurlescaractristiquesdelavariancede laffaiblissementliniquesurunelongueurcomplte. Danslecasdesfibrescblesquisontsouventcoupeslalongueurdutilisationetquisont mesures,lesmesuresduniformitdaffaiblissementontpeudevaleur.Pourlesfibresnon cbles,ilexistedif
38、frentesstratgiespourproduirelemaximumdefibrescbles affaiblissementdefaiblevaleur.Cesstratgiesdpendentdenombreuxfacteursdont lemlangedelongueursetlesprescriptionsdaffaiblissementliniquesurlescblesfinis; lemlangedelongueursetlaffaiblissementliniquedesfibresnoncbles; lesmthodesdinventaireetlesdonnesdis
39、ponibles; lesstratgiesdebandedegardepotentiellementprsentespourlaffaiblissementinduitpar lecble.TS62033 IEC:2000 7 INTRODUCTION Theattenuationcoefficientofopticalfibreandcableismeasuredovertheentirelength.Itcan varylocallywithinanoveralllength.Whenalengthiscutintosubsections,theattenuation coefficie
40、ntofasubsectioncanbelargerthantheattenuationcoefficientofthelengthfrom whichitwascut.Theattenuationuniformitymeasurementprovidesacharacterizationofthe varianceoftheattenuationcoefficientwithinanoveralllength. Forcabledfibre,whichisoftencuttothelengthofuseandmeasured,thereislittlevaluein attenuationu
41、niformitymeasurements.Foruncabledfibre,thereareanumberofstrategies engagedtoproducethemaximumvolumeoflowattenuationcabledfibre.Thesestrategies dependonmanyfactorsincluding mixoflengthsandattenuationcoefficientrequirementsonfinishedcable; mixoflengthsandattenuationcoefficientsonuncabledfibre; invento
42、rymethodsandavailabledata; guardbandingstrategiesthatmaybepresentforcableinducedattenuation.8 TS62033 CEI:2000 UNIFORMITDELAFFAIBLISSEMENTDANSLESFIBRESOPTIQUES 1 Domainedapplication Laprsentespcificationtechniquedonnelesdfinitionsfondamentalesconcernant luniformitdaffaiblissementetprsentelesalgorithmesutilisspourcalculerluniformit daffaiblissementpartirdesmesuresde
