EUROPEAN STANDARD EN IEC 63267-1 NORMEEUROPEENNE EUROPAISCHENORM June 2023 ICS 33.180.10 English Version Fibre optic interconnecting devices and passive components Fibre optic connector optical interfaces - Part 1: Enhanced macro bend loss multimode 5o μm core diameter fibres General and guidance (IEC 63267-1:2023) Dispositifs dinterconnexion et composants passifs Lichtwellenleiter-Verbindungselementeundpassive Bauteile - Optische Schnittstellen fur Steckverbinder - Teil fibroniques -Interfaces optiques de connecteurs fibroniques 1: Verbesserter Makro-Biegeverlust bei Mehrmodenfasern Partie 1:Fibres multimodales de diametre de coeur de 50 μm a performances ameliorees en matiere de pertes par mit 50 μm Kerndurchmesser - Allgemeines und Leitlinien macrocourbures-Generaliteset recommandations (IEC 63267-1:2023) (IEC 63267-1:2023) This European Standard was approved by CENELEC on 2023-06-15. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC ManagementCentreortoanyCENELECmember. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are thenational electrotechnical committees of Austria, Belgium,Bulgaria, Croatia, Cyprus,the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkiye and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comite Europeen de Normalisation Electrotechnique Europaisches Komitee fuir Elektrotechnische Normung CEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels Ref.No.ENIEC63267-1:2023E EN IEC 63267-1:2023 (E) European foreword optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to The following dates are fixed: latest date by which the document has to be implemented at national (dop) 2024-03-15 standards conflicting latest date by which the national the(dow) with 2026-06-15 documenthavetobewithdrawn Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. complete listing of these bodies can be found on the CENELEC website. Endorsement notice The text of the International Standard IEC 63267-1:2023 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standard indicated: IEC 60793-2-10 NOTE Approved as EN IEC 60793-2-10 IEC 61280-4-1 NOTE Approved as EN IEC 61280-4-1 IEC 61300-1:2022NOTE Approved as EN IEC 61300-1:2022 (not modified) IEC 61300-2 (series) NOTE Approved as EN 61300-2 (series) IEC 61300-3 (series) NOTE Approved as EN 61300-3 (series) IEC 61753 (series)NOTE Approved as EN 61753 (series) IEC61753-1 NOTE Approved as EN IEC 61753-1 IEC 61754 (series)NOTE Approved as EN 61754 (series) IEC 61755-1:2005NOTE Approved as EN 61755-1:2006 (not modified) 2 EN IEC 63267-1:2023 (E) Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, th