IEC 60793-2-40:2021

Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres

IEC 60793-2-40:2021 is applicable to category A4 optical multimode fibres and the related subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. 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 in fibre optic cables. Table 1 summarizes some of the salient characteristics and applications of these fibres. This fifth edition cancels and replaces the fourth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- revision of NA range of A4a.2;
- addition of a new subcategory A4i;
- deletion of the subcategory A4f and of Annex F.

Fibres optiques - Partie 2-40: Spécifications de produits - Spécification intermédiaire pour les fibres multimodales de catégorie A4

L'IEC 60793-2-40:2021 s'applique à la catégorie de fibres optiques multimodales A4 et à ses sous-catégories A4a, A4b, A4c, A4d, A4e, A4g, A4h et A4i. Ces fibres possèdent un cœur et une gaine en plastique et elles peuvent avoir des profils de type en saut d'indice, en sauts multiples d'indice ou en gradient d'indice. Les fibres sont utilisées dans les équipements destinés à la transmission de l'information et dans d'autres applications utilisant des techniques similaires de transmission du rayonnement lumineux, et dans des câbles fibroniques. Le Tableau 1 résume certaines des caractéristiques et applications principales de ces fibres. Cette cinquième édition annule et remplace la quatrième édition parue en 2015 dont elle constitue une révision technique. La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- révision de la plage d'ouvertures numériques des fibres A4a.2;
- ajout d'une nouvelle sous-catégorie A4i;
- suppression de la sous-catégorie A4f et de l'Annexe F.

General Information

• Status: Published
• Publication Date: 24-Feb-2021
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: SC 86A - Fibres and cables
• Drafting Committee: WG 1 - TC 86/SC 86A/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 04-Mar-2021
• Completion Date: 25-Feb-2021

Relations

• Revises: IEC 60793-2-40:2015 - Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60793-2-40 ®
Edition 5.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4
multimode fibres
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
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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IEC 60793-2-40 ®
Edition 5.0 2021-02
REDLINE VERSION
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 978-2-8322-9505-2

– 2 – IEC 60793-2-40:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 9
3 Terms and definitions . 10
4 Specifications . 10
4.1 Dimensional requirements . 10
4.2 Mechanical requirements . 11
4.2.1 General . 11
4.2.2 Tensile load test . 12
4.3 Transmission requirements . 13
4.4 Environmental requirements . 13
4.4.1 General . 13
4.4.2 Mechanical environmental requirements . 14
4.4.3 Transmission environmental requirements . 14
Annex A (normative) Family specifications for subcategory A4a multimode fibres . 16
A.1 General . 16
A.2 Dimensional requirements . 16
A.3 Mechanical requirements . 16
A.4 Transmission requirements . 16
A.5 Environmental requirements . 17
Annex B (normative) Family specifications for subcategory A4b multimode fibres . 18
B.1 General . 18
B.2 Dimensional requirements . 18
B.3 Mechanical requirements . 18
B.4 Transmission requirements . 18
B.5 Environmental requirements . 19
Annex C (normative) Family specifications for subcategory A4c multimode fibres . 20
C.1 General . 20
C.2 Dimensional requirements . 20
C.3 Mechanical requirements . 20
C.4 Transmission requirements . 20
C.5 Environmental requirements . 21
Annex D (normative) Family specifications for subcategory A4d multimode fibres . 22
D.1 General . 22
D.2 Dimensional requirements . 22
D.3 Mechanical requirements . 22
D.4 Transmission requirements . 22
D.5 Environmental requirements . 23
Annex E (normative) Family specifications for subcategory A4e multimode fibres . 24
E.1 General . 24
E.2 Dimensional requirements . 24
E.3 Mechanical requirements . 24
E.4 Transmission requirements . 24
E.5 Environmental requirements . 25
Annex F (normative) Family specifications for subcategory A4f multimode fibres . 26

F.1 General .
F.2 Dimensional requirements .
F.3 Mechanical requirements .
F.4 Transmission requirements .
F.5 Environmental requirements .
Annex G (normative) Family specifications for subcategory A4g multimode fibres . 28
G.1 General . 28
G.2 Dimensional requirements . 28
G.3 Mechanical requirements . 28
G.4 Transmission requirements . 28
G.5 Environmental requirements . 29
Annex H (normative) Family specifications for subcategory A4h multimode fibres . 30
H.1 General . 30
H.2 Dimensional requirements . 30
H.3 Mechanical requirements . 30
H.4 Transmission requirements . 30
H.5 Environmental requirements . 31
Annex I (normative) Family specifications for subcategory A4i multimode fibres . 32
I.1 General . 32
I.2 Dimensional requirements . 32
I.3 Mechanical requirements . 32
I.4 Transmission requirements . 32
I.5 Environmental requirements . 33
Annex J (normative) Mode scramblers for subcategory A4a to A4d A4c fibres . 34
J.1 General . 34
J.2 Specification for mode scramblers . 34
Annex K (informative) Additional transmission requirements for subcategory A4a
multimode fibres for wavelengths below 650 nm . 35
K.1 General . 35
K.2 Transmission requirements . 35
Bibliography . 36

Figure 1 – Tensile load versus elongation for a plastic optical fibre . 12
Figure J.1 – Mode scrambler for category A4 fibre . 34

Table 1 – Characteristics and applications of category A4 fibres . 8
Table 2 – Dimensional attributes and measurement methods . 10
Table 3 – Requirements common to all category A4 fibres . 11
Table 4 – Additional attributes required in A4f A4g through A4h A4i family
specifications . 11
Table 5 – Mechanical attributes and test methods . 11
Table 6 – Requirements common to category A4 fibres . 11
Table 7 – Additional attributesrequired in family specification
for subcategory A4f A4g through A4h A4i fibres . 12
Table 8 – Transmission attributes and measurement methods . 13
Table 9 – Attributes required in family specifications . 13
Table 10 – Environmental exposure tests . 14

– 4 – IEC 60793-2-40:2021 RLV © IEC 2021
Table 11 – Attributes measured . 14
Table 12 – Requirement for tensile strength . 14
Table 13 – Requirement for change in attenuation for A4a through A4e fibre . 15
Table 14 – Requirement for change in attenuation for A4f A4g through A4h A4i fibre . 15
Table A.1 – Dimensional requirements specific to A4a fibres . 16
Table A.2 – Mechanical requirements specific to A4a fibres . 16
Table A.3 – Transmission requirements specific to A4a fibres . 17
Ta
...

IEC 60793-2-40 ®
Edition 5.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4
multimode fibres
Fibres optiques –
Partie 2-40: Spécifications de produits – Spécification intermédiaire pour les
fibres multimodales de catégorie A4

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.

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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 IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
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committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
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Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
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(IEV) online.
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IEC 60793-2-40 ®
Edition 5.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4

multimode fibres
Fibres optiques –
Partie 2-40: Spécifications de produits – Spécification intermédiaire pour les

fibres multimodales de catégorie A4

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-9437-6

– 2 – IEC 60793-2-40:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Specifications . 9
4.1 Dimensional requirements . 9
4.2 Mechanical requirements . 10
4.2.1 General . 10
4.2.2 Tensile load test . 10
4.3 Transmission requirements . 11
4.4 Environmental requirements . 12
4.4.1 General . 12
4.4.2 Mechanical environmental requirements . 13
4.4.3 Transmission environmental requirements . 13
Annex A (normative) Family specifications for subcategory A4a multimode fibres . 15
A.1 General . 15
A.2 Dimensional requirements . 15
A.3 Mechanical requirements . 15
A.4 Transmission requirements . 15
A.5 Environmental requirements . 16
Annex B (normative) Family specifications for subcategory A4b multimode fibres . 17
B.1 General . 17
B.2 Dimensional requirements . 17
B.3 Mechanical requirements . 17
B.4 Transmission requirements . 17
B.5 Environmental requirements . 18
Annex C (normative) Family specifications for subcategory A4c multimode fibres . 19
C.1 General . 19
C.2 Dimensional requirements . 19
C.3 Mechanical requirements . 19
C.4 Transmission requirements . 19
C.5 Environmental requirements . 20
Annex D (normative) Family specifications for subcategory A4d multimode fibres . 21
D.1 General . 21
D.2 Dimensional requirements . 21
D.3 Mechanical requirements . 21
D.4 Transmission requirements . 21
D.5 Environmental requirements . 22
Annex E (normative) Family specifications for subcategory A4e multimode fibres . 23
E.1 General . 23
E.2 Dimensional requirements . 23
E.3 Mechanical requirements . 23
E.4 Transmission requirements . 23
E.5 Environmental requirements . 24
Annex F (normative) Family specifications for subcategory A4f multimode fibres . 25

Annex G (normative) Family specifications for subcategory 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 subcategory 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) Family specifications for subcategory A4i multimode fibres . 30
I.1 General . 30
I.2 Dimensional requirements . 30
I.3 Mechanical requirements . 30
I.4 Transmission requirements . 30
I.5 Environmental requirements . 31
Annex J (normative) Mode scramblers for subcategory A4a to A4c fibres . 32
J.1 General . 32
J.2 Specification for mode scramblers . 32
Annex K (informative) Additional transmission requirements for subcategory A4a
multimode fibres for wavelengths below 650 nm . 33
K.1 General . 33
K.2 Transmission requirements . 33
Bibliography . 34

Figure 1 – Tensile load versus elongation for a plastic optical fibre . 11
Figure J.1 – Mode scrambler for category A4 fibre . 32

Table 1 – Characteristics and applications of category A4 fibres .
...