EN IEC 63267-2-1:2024

SLOVENSKI STANDARD
01-junij-2024
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za
izboljšana mnogorodovna optična vlakna zaradi upogibanja - 2-1. del: Parametri
konektorjev s fizičnim stikom za vlakna s premerom jedra 50 μm - Nepoševno (IEC
63267-2-1:2024)
Fibre optic interconnecting devices and passive components - Connector optical
interfaces for enhanced macro bend multimode fibres - Part 2-1: Connection parameters
of physically contacting 50 µm core diameter fibres - Non-angled (IEC 63267-2-1:2024)
Lichtwellenleiter-Verbindungselemente und passive Bauelemente - Optische
Schnittstellen für Mehrmodenfasern mit verbesserte Makrobiegung - Teil 2-1:
Verbindungsparameter von physikalisch kontaktierenden Fasern mit einem
Kerndurchmesser von 50 μm - Nicht gewinkelt (IEC 63267-2-1:2024)
Dispositifs d'interconnexion et composants passifs fibroniques - Interfaces optiques de
connecteurs pour fibres multimodales améliorées en macrocourbures - Partie 2-1 :
Paramètres de connexion des fibres d'un diamètre de cœur de 50 µm en contact
physique - Sans angle (IEC 63267-2-1:2024)
Ta slovenski standard je istoveten z: EN IEC 63267-2-1:2024
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63267-2-1

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2024
ICS 33.180.20
English Version
Fibre optic interconnecting devices and passive components -
Connector optical interfaces for enhanced macro bend
multimode fibres - Part 2-1: Connection parameters of physically
contacting 50 µm core diameter fibres - Non-angled
(IEC 63267-2-1:2024)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter-Verbindungselemente und passive
fibroniques - Interfaces optiques de connecteurs pour fibres Bauelemente - Optische Schnittstellen für
multimodales améliorées en macrocourbures - Partie 2-1 : Mehrmodenfasern mit verbesserte Makrobiegung - Teil 2-1:
Paramètres de connexion des fibres d'un diamètre de cœur Verbindungsparameter von physikalisch kontaktierenden
de 50 µm en contact physique - Sans angle Fasern mit einem Kerndurchmesser von 50 µm - Nicht
(IEC 63267-2-1:2024) gewinkelt
(IEC 63267-2-1:2024)
This European Standard was approved by CENELEC on 2024-04-19. 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
Management Centre or to any CENELEC member.
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 the national 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,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63267-2-1:2024 E

European foreword
The text of document 86B/4858/FDIS, future edition 1 of IEC 63267-2-1, prepared by SC 86B "Fibre
optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 63267-2-1:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-01-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-04-19
document have to be withdrawn
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63267-2-1:2024 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 NOTE Approved as EN IEC 61300-1
IEC 63267-2-2 NOTE Approved as EN IEC 63267-2-2
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, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61300-3-6 - Fibre optic interconnecting devices and EN 61300-3-6 -
passive components - Basic test and
measurement procedures - Part 3-6:
Examinations and measurements - Return
loss
IEC 61300-3-34 - Fibre optic interconnecting devices and EN 61300-3-34 -
passive components - Basic test and
measurement procedures - Part 3-34:
Examinations and measurements -
Attenuation of random mated connectors
IEC 61300-3-35 - Fibre optic interconnecting devices and EN IEC 61300-3-35 -
passive components - Basic test and
measurement procedures - Part 3-35:
Examinations and measurements - Visual
inspection of fibre optic connectors and
fibre-stub transceivers
IEC 61300-3-45 - Fibre optic interconnecting devices and EN IEC 61300-3-45 -
passive components - Basic test and
measurement procedures - Part 3-45:
Examinations and measurements -
Attenuation of random mated multi-fibre
connectors
IEC 63267-1 - Fibre optic interconnecting devices and EN IEC 63267-1 -
passive components - Fibre optic
connector optical interfaces - Part 1:
Enhanced macro bend loss multimode 50
µm core diameter fibres - General and
guidance
IEC 63267-2-1 ®
Edition 1.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Connector optical
interfaces for enhanced macro bend multimode fibres –
Part 2-1: Connection parameters of physically contacting 50 µm core diameter
fibres – Non-angled
Dispositifs d'interconnexion et composants passifs fibroniques – Interfaces
optiques de connecteurs pour fibres multimodales améliorées en
macrocourbures –
Partie 2-1 : Paramètres de connexion des fibres d'un diamètre de cœur de 50 µm
en contact physique – Sans angle
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-8423-0
– 2 – IEC 63267-2-1:2024 © IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Attenuation and return loss grades . 6
5 Criteria for a fit within attenuation and return loss grades . 6
5.1 General . 6
5.2 Attenuation grades and criteria . 6
5.3 Return loss grades and criteria . 9
Annex A (informative) Relationship between lateral offset, numerical aperture, and
core diameter to achieve the attenuation grades . 10
Bibliography . 12

Figure 1 – Schematic illustration showing connection zero and connection one . 7
Figure 2 – Graphical representation showing parameter limits and distribution
information for the purpose of attenuation modelling . 8
Figure 3 – Connection C1 attenuation as a function of lateral offset limit . 9
Figure A.1 – Response surface showing relationship between lateral offset, numerical
aperture, and core diameter to achieve 0,6 dB attenuation for 850 nm operation under
a worst case EF launch condition . 10
Figure A.2 – Response surface showing relationship between lateral offset, numerical
aperture, and core diameter to achieve 1,0 dB attenuation for 850 nm operation under
a worst case EF launch condition . 11

Table 1 – Multimode random mate attenuation grades at 850 nm . 6
Table 2 – Multimode return loss grades at 850 nm . 6
Table 3 – Multimode optical fibre properties . 8
Table 4 – Visual requirements for multimode PC polished end faces return loss grade 2
(RL ≥ 20 dB) . 9

IEC 63267-2-1:2024 © IEC 2024 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
CONNECTOR OPTICAL INTERFACES FOR
ENHANCED MACRO BEND MULTIMODE FIBRES –

Part 2-1: Connection parameters of physically
contacting 50 µm core diameter fibres – Non-angled

FOREWORD
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