LEC IEC 60793-2-50 Edition 6.02018-12 INTERNATIONAL STANDARD NORME INTERNATIONALE colour nside Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single mode fibres Fibresoptiques- Partie 2-50: Specifications de produits -Specification intermediaire pour les fibresunimodalesdeclasseB IEC 60793-2-50:2018-12(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2018 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or your local IEC member National Committee for further information. Droits de reproduction réserves. Sauf indication contraire, aucune partie de cette publication ne peut etre reproduite ni utilisee sous quelque forme que ce soit et par aucun procede, electronique ou mecanique, y compris la photocopie et les microfilms, sans I'accord écrit de I'IEc ou du Comite national de I'IEC du pays du demandeur. Si vous avez des questions sur le copyright de I'lEC ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de I'lEC de votre pays de residence IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEc Catalogue - webstore.iec.ch/catalogue Electropedia -www.electropedia.org Thestand-aloneapplicationforconsulting theentire The world's leading online dictionary of electronic and bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical iPad. Vocabulary (IEV) online. IEC publicationssearch-webstore.iec.ch/advsearchform IEc Glossary - std.iec.ch/glossary The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and varietyof criteria (reference number, text, technical French extracted from the Terms and Definitions clause of committee,...). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and CISPR. IECJustPublished-webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published IECCustomerServiceCentre-webstore.iec.ch/csc details all new publications released. Available online and If you wish to give us your feedback on this publication or also once a month by email. need furtherassistance,pleasecontactthe CustomerService Centre:[email protected]. A propos de I'lEC La Commission Electrotechnique Internationale (lEC) est la premiere organisation mondiale qui élabore et publie des Normes internationales pour tout ce qui a trait a I'électricite, a i'électronique et aux technologies apparentees Apropos des publicationsIEC Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possedez I'édition la plus recente, un corrigendum ou amendement peut avoir ete publie. Catalogue IEC -webstore.iec.ch/catalogue Electropedia-www.electropedia.org Applicationautonomepour consultertousles renseignements Le premier dictionnaire en ligne de termes électroniques et bibliographigues les Normes sur