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 defines the dimensional limits of an optical interface for reference connectors necessary to meet specific requirements for fibre-to-fibre interconnection of non-angled polished multimode reference connectors with cylindrical ferrules intended to be used for attenuation measurements in the field or factory. One grade of reference connector is defined in this document. The reference connector is terminated to selected IEC 60793-2-10:2015 A1a fibre. 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 two reference connectors, and therefore to limit the variation in measured attenuation between randomly chosen reference connectors when mated with connectors in the field or factory. Keywords: optical interface, fibre-to-fibre interconnection

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Optische Schnittstellen von Lichtwellenleiter-Steckverbindern - Teil 6-2: Verbindung von nicht abgeschrägten Mehrmodenfasern mit 50 μm Kerndurchmesser mit physikalischem Kontakt zum Einsatz in Referenzsteckverbinder-Anwendungen bei einer Wellenlänge von 850 nm unter Verwendung von herkömmlichen biegeempfindlichen Fasern

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces optiques de connecteurs - Partie 6-2: Connexion de fibres multimodales en contact physique d’un diamètre de coeur de 50 μm - Connecteurs de référence sans angle, à une longueur d’onde de 850 nm et en utilisant uniquement les fibres A1a choisies

IEC 61755-6-2: 2018 définit les limites dimensionnelles d’une interface optique pour les connecteurs de référence, qui sont nécessaires pour satisfaire aux exigences particulières des interconnexions fibre à fibre des connecteurs de référence multimodaux polis sans angle à férule cylindrique, destinés à être utilisés pour les mesures d’affaiblissement sur le terrain ou en usine. Le présent document définit une classe de connecteur de référence. Le connecteur de référence est raccordé à des fibres A1a choisies conformément à l’IEC 60793-2-10:2015. 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 différentes paires de connecteurs de référence, et donc pour limiter les écarts au niveau de l’affaiblissement mesuré entre des connecteurs de référence choisis de manière aléatoire, lorsqu’ils sont accouplés à des connecteurs sur le terrain ou en usine. Mots clés : interface optique, interconnexions fibre à fibre

Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev - 6-2. del: Spajanje mnogorodovnih vlaken s premerom jedra 50 µm s fizičnim stikom - Za aplikacijo referenčnega pravokotnega konektorja pri valovni dolžini 850 nm z uporabo samo izbranih vlaken A1a (IEC 61755-6-2:2018)

Ta del standarda IEC 61755 določa dimenzijske mejne vrednosti optičnega vmesnika za referenčne priključke za potrebe izpolnjevanja posebnih zahtev za spajanje vlaken pri nekotnih poliranih mnogorodovnih referenčnih konektorjih s cilindričnimi tulkami, ki so namenjeni za meritve slabljenja na terenu ali v tovarni.
V tem dokumentu je opredeljen en razred referenčnih konektorjev. Referenčni konektor je zaključen na izbrano vlakno iz standarda IEC 60793-2-10:2015 A1a. Geometrijske dimenzije in tolerance opredeljenega referenčnega konektorja so bile razvite predvsem za to, da bi omejile razlike pri izmerjeni oslabitvi med več sklopi dveh referenčnih konektorjev in s tem omejile razlike pri izmerjeni oslabitvi med naključno izbranimi referenčnimi konektorji, kadar so ti spojeni s konektorji na terenu ali v tovarni.

General Information

• Status: Published
• Publication Date: 23-Aug-2018
• Withdrawal Date: 25-Jul-2021
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: CLC/TC 86BXA - Fibre optic interconnect, passive and connectorised components
• Drafting Committee: IEC/SC 86B - IEC_SC_86B
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Aug-2018
• Completion Date: 24-Aug-2018
• Ref Project: 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)

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2018
2SWLþQLVSRMQLHOHPHQWLLQSDVLYQHNRPSRQHQWH9PHVQLNLRSWLþQLKNRQHNWRUMHY
GHO6SDMDQMHPQRJRURGRYQLKYODNHQVSUHPHURPMHGUD—PVIL]LþQLPVWLNRP
=DDSOLNDFLMRUHIHUHQþQHJDSUDYRNRWQHJDNRQHNWRUMDSULYDORYQLGROåLQLQP]
XSRUDERVDPRL]EUDQLKYODNHQ$D,(&
)LEUHRSWLFLQWHUFRQQHFWLQJGHYLFHVDQGSDVVLYHFRPSRQHQWV&RQQHFWRURSWLFDO
LQWHUIDFHV3DUW&RQQHFWLRQRIȝPFRUHGLDPHWHUPXOWLPRGHSK\VLFDOO\FRQWDFWLQJ
ILEUHV1RQDQJOHGIRUUHIHUHQFHFRQQHFWRUDSSOLFDWLRQDWZDYHOHQJWKRIQPXVLQJ
VHOHFWHG$DILEUHRQO\,(&
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Optische Schnittstellen
von Lichtwellenleiter-Steckverbindern – Teil 6-2: Verbindung von nicht abgeschrägten
Mehrmodenfasern mit 50 µm Kerndurchmesser mit physikalischem Kontakt zum Einsatz
in Referenz Steckverbinder Anwendungen bei einer Wellenlänge von 850nm unter
Verwendung von herkömmlichen biegeempfindlichen Fasern (IEC 61755-6-2:2018)
'LVSRVLWLIVG¶LQWHUFRQQH[LRQHWFRPSRVDQWVSDVVLIVILEURQLTXHV,QWHUIDFHVRSWLTXHVGH
FRQQHFWHXUV3DUWLH&RQQH[LRQGHILEUHVPXOWLPRGDOHVHQFRQWDFWSK\VLTXHG¶XQ
GLDPqWUHGHFRHXUGHȝP&RQQHFWHXUVGHUpIpUHQFHVDQVDQJOHjXQHORQJXHXU
G¶RQGHGHQPHWHQXWLOLVDQWXQLTXHPHQWOHVILEUHV$DFKRLVLHV,(&

Ta slovenski standard je istoveten z: EN IEC 61755-6-2:2018
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61755-6-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 33.180.20
English Version
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)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Interfaces optiques de connecteurs - Partie 6- Bauteile - Optische Schnittstellen von Lichtwellenleiter-
2: Connexion de fibres multimodales en contact physique Steckverbindern - Teil 6-2: Verbindung von nicht
d'un diamètre de coeur de 50 µm - Connecteurs de abgeschrägten Mehrmodenfasern mit 50 µm
référence sans angle, à une longueur d'onde de 850 nm et Kerndurchmesser mit physikalischem Kontakt zum Einsatz
en utilisant uniquement les fibres A1a choisies in Referenz Steckverbinder Anwendungen bei einer
(IEC 61755-6-2:2018) Wellenlänge von 850nm unter Verwendung von
herkömmlichen biegeempfindlichen Fasern
(IEC 61755-6-2:2018)
This European Standard was approved by CENELEC on 2018-07-26. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61755-6-2:2018 E

European foreword
The text of document 86B/4124/FDIS, future edition 1 of IEC 61755-6-2, 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 61755-6-2:2018.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-04-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-07-26
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.

Endorsement notice
The text of the International Standard IEC 61755-6-2:2018 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 standards
indicated:
IEC 61300-1 NOTE Harmonized as EN 61300-1
IEC 61300-3-42 NOTE Harmonized as EN 61300-3-42
IEC 61755-3 series NOTE Harmonized as EN 61755-3 series
IEC 62614 NOTE Harmonized as EN 62614

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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-2-10 2015 Optical fibres - Part 2-10: Product EN 60793-2-10 2016
specifications - Sectional specification for
category A1 multimode fibres
IEC 61300-3-4 -  Fibre optic interconnecting devices and EN 61300-3-4 -
passive components - Basic test and
measurement procedures -- Part 3-4:
Examinations and measurements -
Attenuation
IEC 61755-6-2 ®
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces

optiques de connecteurs –
Partie 6-2: Connexion de fibres multimodales en contact physique d’un diamètre

de cœur de 50 μm – Connecteurs de référence sans angle, à une longueur

d’onde de 850 nm et en utilisant uniquement les fibres A1a choisies

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5718-0

– 2 – IEC 61755-6-2:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Performance grade . 6
5 Description . 6
6 Criteria for a fit within the performance grade . 7
7 Use of selected fibre in reference-grade connectors . 8
8 Calculated attenuation of random mated grade 1 reference connectors . 8
9 Reference adapter . 9
10 Attenuation measurement uncertainty contribution . 9
Annex A (informative) Multimode attenuation measurement uncertainty contribution . 10
A.1 General . 10
A.2 Sources of variability. 10
A.2.1 Measurement condition and setup . 10
A.2.2 Geometry mismatch . 10
A.3 Overall uncertainty . 11
Bibliography . 12

Figure 1 – Geometrical requirements for fibre core location after termination relative to
the ferrule axis and the connector plug key . 8
Figure 2 – Calculated attenuation of random mated grade 1 reference connectors . 9
Figure A.1 – Attenuation measurement uncertainty contribution for grade 1 reference
connectors resulting from lateral offset, NA and CD mismatch . 10

Table 1 – Multimode attenuation grade at 850 nm . 6
Table 2 – Optical interface parameter values for 1,25 mm and 2,5 mm diameter PC
ferrules for MM reference connectors . 8
Table A.1 – Evaluation of the uncertainty contribution due to measurement conditions . 11

IEC 61755-6-2:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
me
...