EN 60793-2-40:2016

SLOVENSKI STANDARD
01-maj-2016
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Optical fibres - Part 40: Product specifications - Sectional specification for category A4
multimode fibres (IEC 60793-2-40:2015)
Ta slovenski standard je istoveten z: EN 60793-2-40:2016
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60793-2-40

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2016
ICS 33.180.10 Supersedes EN 60793-2-40:2011
English Version
Optical fibres - Part 2-40: Product specifications - Sectional
specification for category A4 multimode fibres
(IEC 60793-2-40:2015)
Fibres optiques - Partie 2-40: Spécifications de produits - Lichtwellenleiter - Teil 2-40: Produktspezifikation -
Spécification intermédiaire pour les fibres multimodales de Rahmenspezifikation für Mehrmodenfasern der
catégorie A4 Kategorie A4
(IEC 60793-2-40:2015) (IEC 60793-2-40:2015)
This European Standard was approved by CENELEC on 2015-12-24. 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, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60793-2-40:2016 E
European foreword
The text of document 86A/1587/CDV, future edition 4 of IEC 60793-2-40, prepared by SC 86A "Fibres
and cables" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 60793-2-40:2016.
The following dates are fixed:
(dop) 2016-09-24
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2018-12-24
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60793-2-40:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60793-2-40:2015 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 60793-1-1 NOTE Harmonized as EN 60793-1-1.
IEC 60793-2 NOTE Harmonized as EN 60793-2.
IEC 60793-2-40:2006 NOTE Harmonized as EN 60793-2-40:2006 (not modified).
IEC 60793-2-41 NOTE Harmonized as EN 60793-2-41.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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 60068-1 -  Environmental testing - EN 60068-1 -
Part 1: General and guidance
IEC 60793-1-20 2001 Optical fibres - EN 60793-1-20 2002
Part 1-20: Measurement methods and
test procedures - Fibre geometry
IEC 60793-1-22 -  Optical fibres - EN 60793-1-22 -
Part 1-22: Measurement methods and
test procedures - Length measurement
IEC 60793-1-40 (mod) 2001 Optical fibres - EN 60793-1-40 2003
Part 1-40: Measurement methods and
test procedures - Attenuation
IEC 60793-1-41 -  Optical fibres - EN 60793-1-41 -
Part 1-41: Measurement methods and
test procedures - Bandwidth
IEC 60793-1-42 -  Optical fibres - EN 60793-1-42 -
Part 1-42: Measurement methods and
test procedures - Chromatic dispersion
IEC 60793-1-43 -  Optical fibres - EN 60793-1-43 -
Part 1-43: Measurement methods and
test procedures - Numerical aperture
measurement
IEC 60793-1-46 -  Optical fibres - EN 60793-1-46 -
Part 1-46: Measurement methods and
test procedures - Monitoring of changes
in optical transmittance
IEC 60793-1-47 2009 Optical fibres - EN 60793-1-47 2009
Part 1-47: Measurement methods and
test procedures - Macrobending loss
IEC 60793-1-50 -  Optical fibres - EN 60793-1-50 -
Part 1-50: Measurement methods and
test procedures - Damp heat (steady
state) tests
Publication Year Title EN/HD Year
IEC 60793-1-51 -  Optical fibres - EN 60793-1-51 -
Part 1-51: Measurement methods and
test procedures - Dry heat (steady state)
tests
IEC 60793-1-52 -  Optical fibres - EN 60793-1-52 -
Part 1-52: Measurement methods and
test procedures - Change of
temperature tests
IEC 60793-2-40 ®
Edition 4.0 2015-11
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4

multimode fibres
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-3022-0

– 2 – IEC 60793-2-40:2015 © IEC 2015
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Specifications . 8
3.1 Dimensional requirements . 8
3.2 Mechanical requirements . 9
3.2.1 General . 9
3.2.2 Tensile load test . 10
3.3 Transmission requirements . 11
3.4 Environmental requirements . 12
3.4.1 General . 12
3.4.2 Mechanical environmental requirements . 13
3.4.3 Transmission environmental requirements . 13
Annex A (normative) Family specifications for sub-category A4a multimode fibres . 14
A.1 General . 14
A.2 Dimensional requirements . 14
A.3 Mechanical requirements . 14
A.4 Transmission requirements . 14
A.5 Environmental requirements . 15
Annex B (normative) Family specifications for sub-category A4b multimode fibres . 16
B.1 General . 16
B.2 Dimensional requirements . 16
B.3 Mechanical requirements . 16
B.4 Transmission requirements . 16
B.5 Environmental requirements . 17
Annex C (normative) Family specifications for sub-category A4c multimode fibres . 18
C.1 General . 18
C.2 Dimensional requirements . 18
C.3 Mechanical requirements . 18
C.4 Transmission requirements . 18
C.5 Environmental requirements . 19
Annex D (normative) Family specifications for sub-category A4d multimode fibres . 20
D.1 General . 20
D.2 Dimensional requirements . 20
D.3 Mechanical requirements . 20
D.4 Transmission requirements . 20
D.5 Environmental requirements . 21
Annex E (normative) Family specifications for sub-category A4e multimode fibres . 22
E.1 General . 22
E.2 Dimensional requirements . 22
E.3 Mechanical requirements . 22
E.4 Transmission requirements . 22
E.5 Environmental requirements . 23
Annex F (normative) Family specifications for sub-category A4f multimode fibres . 24
F.1 General . 24

IEC 60793-2-40:2015 © IEC 2015 – 3 –
F.2 Dimensional requirements . 24
F.3 Mechanical requirements . 24
F.4 Transmission requirements . 24
F.5 Environmental requirements . 25
Annex G (normative) Family specifications for sub-category A4g multimode fibres . 26
G.1 General . 26
G.2 Dimensional requirements . 26
G.3 Mechanical requirements . 26
G.4 Transmission requirements . 26
G.5 Environmental requirements . 27
Annex H (normative) Family specifications for sub-category A4h multimode fibres . 28
H.1 General . 28
H.2 Dimensional requirements . 28
H.3 Mechanical requirements . 28
H.4 Transmission requirements . 28
H.5 Environmental requirements . 29
Annex I (normative) Mode scramblers for sub-category A4a to A4d fibres . 30
I.1 General . 30
I.2 Specification for mode scramblers . 30
Annex J (informative) Additional transmission requirements for sub-category A4a
multimode fibres for wavelengths below 650 nm . 31
J.1 General . 31
J.2 Transmission requirements . 31
Bibliography . 32

Figure 1 – Tensile load versus elongation for a plastic optical fibre . 10
Figure I.1 – Mode scrambler for category A4 fibre . 30

Table 1 – Characteristics and applications of category A4 fibres . 7
Table 2 – Dimensional attributes and measurement methods . 9
Table 3 – Requirements common to all category A4 fibres . 9
Table 4 – Additional attributes required in A4f through A4h family specifications . 9
Table 5 – Mechanical attributes and test methods . 10
Table 6 – Requirements common to category A4 fibres . 10
Table 7 – Additional attributes required in family specification for sub-category A4f
through A4h fibres . 10
Table 8 – Transmission attributes and measurement methods . 11
Table 9 – Attributes required in family specifications . 12
Table 10 – Environmental exposure tests . 12
Table 11 – Attributes measured . 12
Table 12 – Requirement for tensile strength . 13
Table 13 – Requirement for change in attenuation for A4a through A4e fibre . 13
Table 14 – Requirement for change in attenuation for A4f through A4h fibre . 13
Table A.1 – Dimensional requirements specific to A4a fibres . 14
Table A.2 – Mechanical requirements specific to A4a fibres . 14
Table A.3 – Transmission requirements specific to A4a fibres . 15

– 4 – IEC 60793-2-40:2015 © IEC 2015
Table B.1 – Dimensional requirements specific to A4b fibres . 16
Table B.2 – Mechanical requirements specific to A4b fibres . 16
Table B.3 – Transmission requirements specific to A4b fibres . 17
Table C.1 – Dimensional requirements specific to A4c fibres . 18
Table C.2 – Mechanical requirements specific to A4c fibres . 18
Table C.3 – Transmission requirements specific to A4c fibres . 19
Table D.1 – Dimensional requirements specific to A4d fibres . 20
Table D.2 – Mechanical requirements specific to A4d fibres . 20
Table D.3 – Transmission requirements specific to A4d fibres. 21
Table E.1 – Dimensional requirements specific to A4e fibres . 22
Table E.2 – Mechanical requirements specific to A4e fibres . 22
Table E.3 – Transmission requirements specific to A4e fibres . 23
Table F.1 – Dimensional requirements specific to A4f fibres . 24
Table F.2 – Mechanical requirements specific to A4f fibres . 24
Table F.3 – Transmission requirements specific to A4f fibres . 25
Table G.1 – Dimensional requirements specific to A4g fibres . 26
Table G.2 – Mechanical requirements specific to A4g fibres . 26
Table G.3 – Transmission requirements specific to A4g fibres . 27
Table H.1 – Dimensional requirements specific to A4h fibres . 28
Table H.2 – Mechanical requirements specific to A4h fibres . 28
Table H.3 – Transmission requirements specific to A4h fibres. 29
Table I.1 – Mode Scrambler parameters . 30
Table J.1 – Transmission requirements specific to A4a.2 fibre . 31

IEC 60793-2-40:2015 © IEC 2015 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2-40: Product specifications –
Sectional specification for category A4 multimode fibres

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 60793-2-40 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This fourth edition cancels and replaces the third edition published in 2009. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) harmonization of terminology within the IEC 60793-2 series;
b) added measurement parameters for numerical aperture and fibre geometry.

– 6 – IEC 60793-2-40:2015 © IEC 2015
The text of this standard is based on the following documents:
CDV Report on voting
86A/1587/CDV 86A/1618/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60793 series, published under the general title Optical fibres, can
be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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.
IEC 60793-2-40:2015 © IEC 2015 – 7 –
OPTICAL FIBRES –
Part 2-40: Product specifications –
Sectional specification for category A4 multimode fibres

1 Scope
This part of IEC 60793-2 is applicable to category A4 optical multimode fibres and the related
sub-categories A4a, A4b, A4c, A4d, A4e, A4f, A4g and A4h. These fibres have a plastic core
and plastic cladding and may have step-index, multi-step index or graded-index profiles. The
fibres are used in information transmission equipment and other applications employing
similar light transmitting techniques, and finally in fibre optic cables. Table 1 summarizes
some of the salient characteristics and applications of these fibres.
Table 1 – Characteristics and applications of category A4 fibres
Sub- A4a A4b A4c A4d A4e A4f A4g A4h
category
Core See See See See 200 120 62,5
≥ 500
diameter Note 1 Note Note Note 1
1 1
(µm)
Cladding 1 000 750 500 1 000 750 490 490 245
diameter
(µm)
Numerical 0,50 0,50 0,50 0,30 0,25 0,190 0,190 0,190
aperture
Na
ff
Operating 650 650 650 650 650 650 650 850
wave- 850 850 1 300
See Note 2
length 1 300 1 300
(s) (nm)
Applica- Digital Indus- Sen- Digital Digital Industrial Data Data
tions audio trial sor audiovisual audiovisual and mobile; transmission transmission;
interface, and interface interface compatible primarily
automobile, sen- and data and data with A3 used in
industrial, sor transmission transmission transmission ribbon
sensor and equipment structures
data
transmis-
sion
NOTE 1 Typically 15 µm to 35 µm smaller than the cladding diameter.

NOTE 2 Other potential wavelengths for A4a fibre are described in Annex J.

In addition to the applications shown in Table 1, other applications for A4 fibres include, but
are not restricted to, the following: support for short reach, high bit-rate systems in telephony,
distribution and local networks, carrying data, voice and/or video services and on-premises
intrabuilding and interbuilding fibre installations, including LANs, PBXs, video, various
multiplexing uses and miscellaneous related uses, such as consumer electronics and
industrial and mobile networks.
Three types of requirements apply to A4 fibres:
• general requirements, as defined in IEC 60793-2;
• specific requirements common to category A4 multimode fibres covered in this standard
and which are given in Clause 3;

– 8 – IEC 60793-2-40:2015 © IEC 2015
• particular requirements applicable to individual fibre sub-categories and implementations
or specific applications which are defined in this standard, in the normative family
specification annexes.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60793-1-20:2001, Optical fibres – Part 1-20: Measurement methods and test procedures
– Fibre geometry
IEC 60793-1-22, Optical fibres – Part 1-22: Measurement methods and test procedures –
Length measurement
IEC 60793-1-40:2001, Optical fibres – Part 1-40: Measurement methods and test procedures
– Attenuation
IEC 60793-1-41, Optical fibres – Part 1-41: Measurement methods and test procedures –
Bandwidth
IEC 60793-1-42, Optical fibres – Part 1-42: Measurement methods and test procedures –
Chromatic dispersion
IEC 60793-1-43, Optical fibres – Part 1-43: Measurement methods and test procedures –
Numerical aperture measurement
IEC 60793-1-46, Optical fibres – Part 1-46:Measurement methods and test procedures –
Monitoring of changes in optical transmittance
IEC 60793-1-47:2009, Optical fibres – Part 1-47: Measurement methods and test procedures
– Macrobending loss
IEC 60793-1-50, Optical fibres – Part 1-50: Measurement methods and test procedures –
Damp heat (steady state) tests
IEC 60793-1-51, Optical fibres – Part 1-51: Measurement methods and test procedures – Dry
heat (steady state) tests
IEC 60793-1-52, Optical fibres – Part 1-52: Measurement methods and test procedures –
Change of temperature tests
3 Specifications
3.1 Dimensional requirements
Relevant dimensional attributes and measurement methods are given in Table 2.
Requirements common to all category A4 fibres are indicated in Table 3.
Additional attributes that shall be specified in the family specifications for sub-categories A4f
through A4h are given in Table 4.

IEC 60793-2-40:2015 © IEC 2015 – 9 –
Table 2 – Dimensional attributes and measurement methods
Attribute Measurement method
a
Cladding diameter IEC 60793-1-20
a
Cladding non-circularity IEC 60793-1-20
b
Core diameter IEC 60793-1-20
Fibre length IEC 60793-1-22
Core-cladding concentricity error IEC 60793-1-20
Core non-circularity IEC 60793-1-20
a
Mechanical methods are also applicable to cladding diameter and cladding non-circularity measurements if
they provide the same measurement uncertainty.
b
Core diameter is specified at (650 ± 10) nm with a test specimen length of 2,0 m ± 0,2 m and a threshold
value k of 2,5 % (IEC 60793-1-20:2001, Method B) for A4 fibres.
CORE
Table 3 – Requirements common to all category A4 fibres
Attribute Unit Limit
a
Cladding diameter µm
b
Cladding non-circularity %
≤ 6
c
Core diameter µm
d
Fibre length km
a
The cladding diameter varies and is listed in the family specification.
b
Unless otherwise specified in the family specification.
c
For A4a, A4b, A4c and A4d fibre, the core diameter is typically 15 µm to 35 µm smaller than the cladding
diameter. For A4e, A4f, A4g and A4h fibre, the core diameter varies and is listed in the family specification.
d
Length requirements vary and should be agreed between supplier and customer.

Table 4 – Additional attributes required in A4f through A4h family specifications
Attribute
Core non-circularity
Core-cladding concentricity error

3.2 Mechanical requirements
3.2.1 General
Mechanical attributes, test methods, and requirements for buffered fibres can be found in
IEC 60794-2-41.
Relevant mechanical attributes and test methods are given in Table 5.
Requirements common to all category A4 fibres are indicated in Table 6.
Additional attributes that shall be specified in the family specifications for sub-categories A4f
through A4h are given in Table 7.

– 10 – IEC 60793-2-40:2015 © IEC 2015
Table 5 – Mechanical attributes and test methods
Attribute Test method
Tensile performance 3.2.2
Table 6 – Requirements common to category A4 fibres
Attribute Unit Limit
Elongation at yield peak %
≥ 4,0
a
Tensile load at yield peak N
a
Tensile load at yield peak varies and is listed in the
family specification.
Table 7 – A
...