SIST EN IEC 63267-3-61:2025

Fibre optic interconnecting devices and passive components - Fibre optic connector optical interfaces for enhanced macrobend multimode fibres - Part 3-61: Connector parameters of physically contacting 50 μm core diameter fibres - Non-angled 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules for reference connection applications (IEC 63267-3-61:2025)

IEC 63267-3-61: 2025 defines the dimensional limits of an optical interface for reference connectors with 2,5 mm or 1,25 mm diameter cylindrical zirconia (ZrO2) ferrules necessary to meet specific requirements for fibre-to-fibre interconnection of non-angled polished multimode reference connections as defined in IEC 63267-2-2. Ferrule dimensions and features are contained in the IEC 61754 series of fibre optic connector interface standards. One grade of reference connector, Rm1, is defined in this document. The reference connector is terminated to restricted IEC 60793-2-10 using A1-OM2b to A1‑OM5b fibre in 850 nm band only. The geometrical dimensions and tolerances of the specified reference connector have been developed primarily to limit the variation in measured attenuation between multiple sets of reference connectors, and therefore to reduce the variation in measured attenuation between an arbitrarily chosen reference connector when mated with a connector in the field or factory.
This first edition and the first edition of IEC 63267-2-2 cancel and replace the first edition of IEC 61755-6-2 published in 2018. This edition constitutes a technical revision. The document includes the following significant technical changes with respect to the previous edition:
a) Definition of a reference grade, Rm1 interface;
b) Inclusion of A1-OM2b to A1-OM5b fibres;
c) Updates to normative references;
d) The addition of Annex A, which describes the attenuation test limits of reference grade Rm1 connectors to grade Bm connectors;
e) A new Annex B that describes the allowable fibre undercut.

Lichtwellenleiter – Verbindungselemente und passive Bauteile – Optische Schnittstellen von Lichtwellenleiter-Steckverbindern für verbesserte Makrobend-Multimodefasern – Teil 3-61: Parameter von Steckverbindern mit physikalischem Kontakt für Fasern mit 50 µm Kerndurchmesser – Nicht abgeschrägte zylindrische Vollzirkoniumdioxid- Ferrulen mit 2,5 mm und 1,25 mm Durchmesser für Referenzanschlussanwendung (IEC 63267-3-61:2025)

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces optiques des connecteurs fibroniques pour fibres multimodales améliorées en macrocourbures - Partie 3-61: Paramètres de connexion des fibres d’un diamètre de cœur de 50 µm en contact physique - Ferrules cylindriques non inclinées en zircone pleine de 2,5 mm et 1,25 mm de diamètre, pour les applications de connexion de référence (IEC 63267-3-61:2025)

IEC 63267-3-61: 2025 définit les limites dimensionnelles d’une interface optique pour des connecteurs de référence dotés de férules cylindriques en zircone (ZrO2) de 2,5 mm ou 1,25 mm de diamètre, qui sont nécessaires pour satisfaire aux exigences spécifiques pour l’interconnexion fibre à fibre des connexions de référence multimodales polies et non inclinées, telles qu’elles sont définies dans l’IEC 63267-2-2. Les dimensions et les caractéristiques des férules sont spécifiées dans les normes d’interfaces de connecteurs fibroniques de la série IEC 61754. Le présent document définit une classe de connecteur de référence, Rm1. Le connecteur de référence est raccordé à une sélection de fibres conformes à l’IEC 60793-2-10, soit les fibres des sous-catégories A1-OM2b à A1‑OM5b, et uniquement dans la bande de 850 nm. Les dimensions géométriques et les tolérances du connecteur de référence spécifié ont été développées principalement pour limiter les écarts au niveau de l’affaiblissement mesuré entre les différents ensembles de connecteurs de référence, et donc pour réduire les écarts au niveau de l’affaiblissement mesuré sur un connecteur de référence choisi arbitrairement, lorsqu’il est accouplé à un connecteur sur le terrain ou en usine.
Cette première édition et la première édition de l'IEC 63267-2-2 annulent et remplacent la première édition de l'IEC 61755-6-2 parue en 2018. Cette édition constitue une révision technique. Le document inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) définition d'une classe de référence, interface Rm1;
b) inclusion des fibres A1-OM2b à A1-OM5b;
c) mise à jour des références normatives;
d) ajout de l'Annexe A, qui décrit les limites de l’essai d’affaiblissement des connecteurs de classe de référence Rm1 par rapport aux connecteurs de classe Bm;
e) nouvelle Annexe B qui décrit le retrait admissible de la fibre.

Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za izboljšana makrobend mnogorodovna vlakna - 3-61. del: Parametri konektorjev s fizičnim stikom za vlakna s premerom jedra 50 μm - Nekotne cilindrične polne cirkonijeve tulke s premerom 2,5 mm in 1,25 mm za aplikacije referenčnih konektorjev (IEC 63267-3-61:2025)

General Information

• Status: Not Published
• Public Enquiry End Date: 31-Mar-2024
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Sep-2025
• Due Date: 08-Nov-2025
• Ref Project: EN IEC 63267-3-61:2025 - Fibre optic interconnecting devices and passive components - Fibre optic connector optical interfaces for enhanced macrobend multimode fibres - Part 3-61: Connector parameters of physically contacting 50 μm core diameter fibres - Non-angled 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules for reference connection applications

Relations

• Revises: SIST EN IEC 61755-6-2:2018 - Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 6-2: Connection of 50 μm core diameter multimode physically contacting fibres - Non-angled for reference connector application, at wavelength of 850 nm using selected A1a fibre only (IEC 61755-6-2:2018)
• Effective Date: 05-Aug-2025

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 63267-3-61:2024
01-marec-2024
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za
izboljšana makrobend večmodna vlakna - 3-61. del: Parametri konektorjev s
fizičnim stikom za vlakna s premerom jedra 50 μm - Nekotne cilindrične polne
cirkonijeve tulke s premerom 2,5 mm in 1,25 mm za aplikacije referenčnih
konektorjev
Fibre optic interconnecting devices and passive components - Fibre optic connector
optical interfaces for enhanced macrobend multimode fibres - Part 3-61: Connector
parameters of physically contacting 50 μm core diameter fibres - Non-angled 2,5 mm
and 1,25 mm diameter cylindrical full zirconia ferrules for reference connection
applications
Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces optiques des
connecteurs fibroniques pour fibres multimodales améliorées en macrocourbures - Partie
3-61: Paramètres de connexion des fibres d’un diamètre de cœur de 50 µm en contact
physique - Ferrules cylindriques non inclinées en zircone pleine de 2,5 mm et 1,25 mm
de diamètre, pour les applications de connexion de référence
Ta slovenski standard je istoveten z: prEN IEC 63267-3-61:2024
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
oSIST prEN IEC 63267-3-61:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 63267-3-61:2024

oSIST prEN IEC 63267-3-61:2024
86B/4836/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 63267-3-61 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-01-26 2024-04-19
SUPERSEDES DOCUMENTS:
86B/4765/CD, 86B/4799A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Shigeru Tomita
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
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The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
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submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Fibre optic interconnecting devices and passive components - Fibre optic connector optical
interfaces for enhanced macrobend multimode fibres – Part 3-61: Connector parameters of
physically contacting 50 μm core diameter fibres – Non-angled 2,5 mm and 1,25 mm diameter
cylindrical full zirconia ferrules for reference connection applications

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee
positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other
purpose without permission in writing from IEC.

oSIST prEN IEC 63267-3-61:2024
IEC CDV 63267-3-61/Ed1 © IEC 2024 2 86B/4836/CDV

1 CONTENTS
2 FOREWORD . 3
3 1 Scope . 5
4 2 Normative references . 5
5 3 Terms and definitions . 5
6 4 Attenuation grade . 6
7 5 Description . 6
8 6 Criteria for a fit within the reference performance grade . 7
9 6.1 Geometry of reference plug after termination . 7
10 6.2 End face geometry of reference plug after termination . 9
11 6.3 Use of selected fibre in reference-grade connectors . 9
12 7 Reference adapter . 9
13 Annex A (informative) Attenuation test limits of reference grade R connectors to
m1
14 grade Bm connectors . 10
15 A.1 Introduction . 10
16 A.2 Performance grade Bm test limit against Rm1 reference connector . 10
17 A.3 Calculated attenuation of random mated Grade R reference connections . 10
m1
18 Annex B (normative) Maximum allowed spherical fibre undercut . 11
20 Figure 1 – Geometrical requirements for fibre core location after termination relative to
21 the ferrule axis and the connector plug key . 7
22 Figure 2 - Interface dimensions for PC ferrule . 8
23 Figure A.1 - Calculated attenuation of random mated Grade R reference connectors . 10
m1
24 Figure B.1 – Allowable undercut as a function of endface radius and apex offset – 4,9
25 N minimum contact force. 11
26 Figure B.2 – Allowable undercut as a function of end face radius and apex offset – 2,9
27 N minimum contact force. 12
29 Table 1 – Multimode attenuation grade at 850 nm . 6
30 Table 2 - Optical interface parameter values for 2,5 mm diameter PC ferrules for
31 multimode reference connectors grade R . 8
m1
32 Table A.1 – Performance grade test limits at 850 nm . 10
oSIST prEN IEC 63267-3-61:2024
IEC CDV 63267-3-61/Ed1 © IEC 2024 3 86B/4836/CDV

34 INTERNATIONAL ELECTROTECHNICAL COMMISSION
35 ____________
37 FIBRE OPTIC INTERCONNECTING DEVICES AND
38 PASSIVE COMPONENTS -
39 FIBRE OPTIC CONNECTOR OPTICAL INTERFACES FOR ENHANCED
40 MACROBEND MULTIMODE FIBRES–
42 Part 3-61: Connector parameters of physically contacting 50 μm core
43 diameter fibres – Non-angled 2,5 mm and 1,25 mm diameter cylindrical full
44 zirconia ferrules for reference connection applications
47 FOREWORD
48 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
49 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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75 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
76 indispensable for the correct application of this publication.
77 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
78 rights. IEC shall not be held responsible for identifying any or all such patent rights.
79 International Standard IEC 63267-3-61 has been prepared by subcommittee 86B: Fibre optic
80 interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
81 This document and IEC 63267-2-2 fully replaces IEC 61755-6-2.
82 The text of this standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
oSIST prEN IEC 63267-3-61:2024
IEC CDV 63267-3-61/Ed1 © IEC 2024 4 86B/4836/CDV

84 Full information on the voting for the approval of this standard can be found in the report on
85 voting indicated in the above table.
86 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
87 The committee has decided that the contents of this publication will remain unchanged until the
88 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
89 the specific publication. At this date, the publication will be
90 • reconfirmed,
91 • withdrawn,
92 • replaced by a revised edition, or
93 • amended.
95 A bilingual version of this publication may be issued at a later date.
oSIST prEN IEC 63267-3-61:2024
IEC CDV 63267-3-61/Ed1 © IEC 2024 5 86B/4836/CDV

97 FIBRE OPTIC INTERCONNECTING DEVICES AND
98 PASSIVE COMPONENTS -
99 FIBRE OPTIC CONNECTOR OPTICAL INTERFACES FOR ENHANCED
100 MACROBEND MULTIMODE FIBRES–
102 Part 3-61: Connector parameters of physically contacting 50 μm core
103 diameter fibres – Non-angled 2,5 mm and 1,25 mm diameter cylindrical full
104 zirconia ferrules for reference connection applications
106 1 Scope
107 This part of the IEC 63267 series defines the dimensional limits of an optical interface for
108 reference connectors with 2,5 mm or 1,25 mm diameter cylindrical zirconia (ZrO ) ferrules
109 necessary to meet specific requirements for fibre-to-fibre interconnection of non-angled
110 polished multimode reference connections as defined in IEC 63267-2-2.
111 Ferrule dimensions and features are contained in the IEC 61754 series of fibre optic
112 connector interface standards.
113 One grade of reference connector, Rm1, is defined in this document. The reference connector
114 is terminated to restricted IEC 60793-2-10 using A1-OM2b to A1-OM5b fibre in 850 nm band
115 only.
116 The geometrical dimensions and tolerances of the specified reference connector have been
117 developed primarily to limit the variation in measured attenuation between multiple sets of
118 reference connectors, and therefore to reduce the variation in measured attenuation between
119 an arbitrarily chosen reference connector when mated with a connector in the field or factory.
121 2 Normative references
122 The following documents, in whole or in part, are normatively referenced in this document and
123 are indispensable for its application. For dated references, only the edition cited applies. For
124 undated references, the latest edition of the referenced document (including any amendments)
125 applies.
126 IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
127 category A1 multimode fibre.
128 IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
129 measurement procedures – Part 3-4: Examinations and measurements – Attenuation.
130 IEC 61300-3-42, Fibre optic interconnec
...