IEC 62614-1:2020
(Main)Fibre optics - Multimode launch conditions - Part 1: Launch condition requirements for measuring multimode attenuation
Fibre optics - Multimode launch conditions - Part 1: Launch condition requirements for measuring multimode attenuation
IEC 62614-1:2020 describes the launch condition requirements used for measuring multimode attenuation in passive components and in installed cable plants. In this document, the fibre types that are addressed include category A1-OMx, where x = 2, 3, 4 and 5 (50 µm/125 µm), and A1-OM1 (62,5 µm/125 µm) multimode fibres, as specified in IEC 60793-2-10. The nominal test wavelengths detailed are 850 nm and 1 300 nm. This document can be suitable for multimode attenuation measurements for other multimode categories and/or other wavelengths, but the source condition for other categories and wavelengths are not defined here. The purpose of these requirements is as follows:
- to ensure consistency of field measurements when different types of test equipment are used;
- to ensure consistency of factory measurements when different types of test equipment are used;
- to ensure consistency of field measurements when compared with factory measurements.
This document describes launch condition requirements for optical attenuation using sources with a controlled encircled flux (EF). This first edition cancels and replaces IEC 62614, published in 2010, and constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 62614:
a) increase of the value of the uncertainty attenuation variation coefficient Y for 50 µm core fibre at 1 300 nm, due to launch conditions, to twice the previous value;
b) changes to 3.4, 5.6, including Table 5, and some references to remain consistent with IEC 61280-4-1:2019;
c) changes to multimode fibre references to be consistent with IEC 60793-2-10:2019.
Fibronique - Conditions d'injection en multimodal - Partie 1: Exigences des conditions d’injection pour la mesure de l’affaiblissement en multimodal
IEC 62614-1:2020 décrit les exigences relatives aux conditions d’injection utilisées pour la mesure de l’affaiblissement en multimodal, dans des composants passifs et dans des installations câblées. Les types de fibres qui relèvent du présent document comprennent les fibres optiques multimodales des catégories A1-OMx, où x = 2, 3, 4 et 5 (50 µm/125 µm), et A1-OM1 (62,5 µm /125 µm), spécifiées dans l’IEC 60793-2-10. Les longueurs d’onde d’essai nominales spécifiées sont 850 nm et 1 300 nm. Le présent document peut être approprié pour les mesures de l’affaiblissement en multimodal pour d’autres catégories de fibres multimodales et/ou pour d’autres longueurs d’onde, mais les conditions de la source pour ces autres catégories et longueurs d’onde n’y sont pas définies. Les exigences exposées ici ont pour objectif:
- d’assurer la cohérence des mesures sur site, lorsque différents types d’équipements d’essai sont utilisés;
- d’assurer la cohérence des mesures en usine lorsque des types différents d’équipements d’essai sont utilisés;
- d’assurer la cohérence des mesures sur site lors des comparaisons avec les mesures en usine.
Le présent document décrit les exigences relatives aux conditions d’injection pour l’affaiblissement optique en utilisant des sources qui ont un flux inscrit (EF) contrôlé. Cette première édition annule et remplace l'IEC 62614 parue en 2010. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'IEC 62614:
a) Augmentation de la valeur du coefficient d'incertitude de la variation de l’affaiblissement Y pour une fibre dont le diamètre de cœur est de 50 µm à 1 300 nm, en raison des conditions d'injection, à deux fois la valeur antérieure;
b) modifications de 3.4, 5.6 y compris le Tableau 5 et de certaines références, pour assurer la cohérence avec l'IEC 61280-4-1:2019;
c) modifications des désignations des fibres multimodales pour assurer la cohérence avec l'IEC 60793-2-10:2019.
General Information
Relations
Buy Standard
Standards Content (Sample)
IEC 62614-1 ®
Edition 1.0 2020-06
INTERNATIONAL
STANDARD
colour
inside
Fibre optics – Multimode launch conditions –
Part 1: Launch condition requirements for measuring multimode attenuation
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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, please contact the address below or
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and once 67 000 electrotechnical terminology entries in English and
a month by email. French extracted from the Terms and Definitions clause of IEC
publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or need CISPR.
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 62614-1 ®
Edition 1.0 2020-06
INTERNATIONAL
STANDARD
colour
inside
Fibre optics – Multimode launch conditions –
Part 1: Launch condition requirements for measuring multimode attenuation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01 ISBN 978-2-8322-8398-1
– 2 – IEC 62614-1:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Background on multimode launch conditions . 6
5 Test source launch . 7
5.1 General . 7
5.2 Encircled flux . 7
5.3 Encircled flux template illustration . 7
5.4 Encircled flux target for attenuation measurement . 8
5.5 Harmonization of multimode launch conditions to eliminate wavelength bias . 9
5.6 Uncertainties expectations . 10
5.7 Encircled flux limits . 10
5.8 Practical limitations of multimode launch conditions . 11
Bibliography . 12
Figure 1 – EF template illustration for 50 µm core fibre cabling at 850 nm . 8
Figure 2 – Wavelength comparison . 9
Table 1 – EF target for 50 µm core fibre at 850 nm . 8
Table 2 – EF target for 50 µm core fibre at 1 300 nm . 8
Table 3 – EF target for 62,5 µm fibre at 850 nm . 9
Table 4 – EF target for 62,5 µm fibre at 1 300 nm . 9
Table 5 – Attenuation, threshold tolerance and confidence level . 10
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTICS – MULTIMODE LAUNCH CONDITIONS –
Part 1: Launch condition requirements for
measuring multimode attenuation
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62614-1 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This first edition cancels and replaces IEC 62614, published in 2010, and constitutes a technical
revision.
This edition includes the following significant technical changes with respect to IEC 62614:
a) increase of the value of the uncertainty attenuation variation coefficient Y for 50 µm core
fibre at 1 300 nm, due to launch conditions, to twice the previous value;
b) changes to 3.4, 5.6, including Table 5, and some references to remain consistent with
IEC 61280-4-1:2019;
c) changes to multimode fibre references to be consistent with IEC 60793-2-10:2019.
– 4 – IEC 62614-1:2020 © IEC 2020
The text of this International Standard is based on the following documents:
CDV Report on voting
86C/1625/CDV 86C/1654A/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62614 series, published under the general title Fibre optics –
Multimode launch conditions, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
FIBRE OPTICS – MULTIMODE LAUNCH CONDITIONS –
Part 1: Launch condition requirements for
measuring multimode attenuation
1 Scope
This part of IEC 62614 describes the launch condition requirements used for measuring
multimode attenuation in passive components and in installed cable plants.
In this document, the fibre types that are addressed include category A1-OMx, where x = 2, 3,
4 and 5 (50 µm/125 µm), and A1-OM1 (62,5 µm/125 µm) multimode fibres, as specified in
IEC 60793-2-10. The nominal test wavelengths detailed are 850 nm and 1 300 nm. This
document can be suitable for multimode attenuation measurements for other multimode
categories and/or other wavelengths, but the source condition for other categories and
wavelengths are not defined here.
The purpose of these requirements is as follows:
• to ensure consistency of field measurements when different types of test equipment are
used;
• to ensure consistency of factory measurements when different types of test equipment are
used;
• to ensure consistency of field measurements when compared with factory measurements.
This document describes launch condition requirements for optical attenuation using sources
with a controlled encircled flux (EF).
2 Normative references
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.
IEC 61280-1-4, Fibre optic communication subsystem test procedures – Part 1-4: General
communication subsystems – Light source encircled flux measurement method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
– 6 – IEC 62614-1:2020 © IEC 2020
3.1
encircled flux
EF
fraction of cumulative near-field power to the total output power as a function of radial distance
from the optical centre of the core
3.2
multimode attenuation
attenuation pertaining to multimode fibres and/or multimode fibre components, systems and
subsystems
3.3
reference grade launch cord
launch cords constructed with a reference grade termination at the interface to the device under
test
3.4
reference grade termination
connector and plug with tightened tolerances terminated onto an optical fibre with tightened
tolerances such that the expected attenuation of a connection formed by mating two such
assemblies is lower and more repeatable than a standard-grade termination
Note 1 to entry: An adapter, required to assure the reduced attenuation, may be considered part of the reference
grade termination where required by the test configuration.
Note 2 to entry: IEC 61755-6-2 defines reference grade terminations for 50/125 µm fibre.
4 Background on multimode launch conditions
There have been a wide range of launch conditions used for testing multimode fibre components
and systems.
...
IEC 62614-1 ®
Edition 1.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optics – Multimode launch conditions –
Part 1: Launch condition requirements for measuring multimode attenuation
Fibronique – Conditions d’injection en multimodal –
Partie 1: Exigences des conditions d’injection pour la mesure de
l’affaiblissement en multimodal
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.
IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 62614-1 ®
Edition 1.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optics – Multimode launch conditions –
Part 1: Launch condition requirements for measuring multimode attenuation
Fibronique – Conditions d’injection en multimodal –
Partie 1: Exigences des conditions d’injection pour la mesure de
l’affaiblissement en multimodal
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01 ISBN 978-2-8322-8958-7
– 2 – IEC 62614-1:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Background on multimode launch conditions . 6
5 Test source launch . 7
5.1 General . 7
5.2 Encircled flux . 7
5.3 Encircled flux template illustration . 7
5.4 Encircled flux target for attenuation measurement . 8
5.5 Harmonization of multimode launch conditions to eliminate wavelength bias . 9
5.6 Uncertainties expectations . 10
5.7 Encircled flux limits . 10
5.8 Practical limitations of multimode launch conditions . 11
Bibliography . 12
Figure 1 – EF template illustration for 50 µm core fibre cabling at 850 nm . 8
Figure 2 – Wavelength comparison . 9
Table 1 – EF target for 50 µm core fibre at 850 nm . 8
Table 2 – EF target for 50 µm core fibre at 1 300 nm . 8
Table 3 – EF target for 62,5 µm fibre at 850 nm . 9
Table 4 – EF target for 62,5 µm fibre at 1 300 nm . 9
Table 5 – Attenuation, threshold tolerance and confidence level . 10
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTICS – MULTIMODE LAUNCH CONDITIONS –
Part 1: Launch condition requirements for
measuring multimode attenuation
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62614-1 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This first edition cancels and replaces IEC 62614, published in 2010, and constitutes a technical
revision.
This edition includes the following significant technical changes with respect to IEC 62614:
a) increase of the value of the uncertainty attenuation variation coefficient Y for 50 µm core
fibre at 1 300 nm, due to launch conditions, to twice the previous value;
b) changes to 3.4, 5.6, including Table 5, and some references to remain consistent with
IEC 61280-4-1:2019;
c) changes to multimode fibre references to be consistent with IEC 60793-2-10:2019.
– 4 – IEC 62614-1:2020 © IEC 2020
The text of this International Standard is based on the following documents:
CDV Report on voting
86C/1625/CDV 86C/1654A/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62614 series, published under the general title Fibre optics –
Multimode launch conditions, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
FIBRE OPTICS – MULTIMODE LAUNCH CONDITIONS –
Part 1: Launch condition requirements for
measuring multimode attenuation
1 Scope
This part of IEC 62614 describes the launch condition requirements used for measuring
multimode attenuation in passive components and in installed cable plants.
In this document, the fibre types that are addressed include category A1-OMx, where x = 2, 3,
4 an
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.