Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres

IEC 60793-2-10:2017 is applicable to optical fibre sub-categories A1a, A1b, and A1d. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. Sub-category A1a applies to 50/125 mm graded index fibre. Four bandwidth grades are defined as models A1a.1, A1a.2, A1a.3 and A1a.4. Each of these bandwidth grades is defined for two levels of macrobend loss performance that are distinguished by "a" or "b" suffix. Those models with suffix "a" are specified to meet traditional macrobend loss performance levels. Those models with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss) performance levels. Model A1a.4 supports single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm. Sub-category A1b applies to 62,5/125 mm graded index fibre and sub-category A1d applies to 100/140 mm graded index fibre. Other applications include, but are not restricted to, the following: - short reach, high bit-rate systems in telephony, distribution and local networks carrying data, voice and/or video services; - on-premises intra-building and inter-building fibre installations including data centres, local area networks (LANs), storage area networks (SANs), private branch exchanges (PBXs), video, various multiplexing uses, outside telephone cable plant use, and miscellaneous related uses. Three types of requirements apply to these fibres: - general requirements, as defined in IEC 60793-2; - specific requirements common to the category A1 multimode fibres covered in this document and which are given in Clause 5; - particular requirements applicable to individual fibre sub-categories and models, or specific applications, which are defined in the normative specification annexes. This sixth edition cancels and replaces the fifth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: addition of model A1a.4 fibre which supports single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm. Keywords: optical fibre sub-categories A1a, A1b, and A1d

Lichtwellenleiter - Teil 2-10: Produktspezifikationen - Rahmenspezifikation für Mehrmodenfasern der Kategorie A1

Fibres optiques - Partie 2-10: Spécifications de produits - Spécification intermédiaire pour les fibres multimodales de catégorie A1

IEC 60793-2-10:2017 est applicable aux fibres optiques des sous-catégories A1a, A1b et A1d. Ces fibres sont utilisées ou peuvent être intégrées dans des équipements destinés à la transmission de l’information et dans des câbles à fibres optiques. La sous-catégorie A1a s’applique aux fibres à gradient d’indice de 50/125 mm. Il existe quatre classes de largeur de bande, appelées modèles A1a.1, A1a.2, A1a.3 et A1a.4. Chacune de ces classes de largeur de bande est définie pour deux niveaux de performances en matière de pertes par macrocourbures, qui se distinguent par le suffixe "a" ou "b". Les modèles qui comportent le suffixe "a" sont spécifiés de façon à satisfaire aux niveaux de performances classiques en matière de pertes par macrocourbures. Les modèles qui comportent le suffixe "b" sont spécifiés de façon à satisfaire aux niveaux de performances avancées en matière de pertes par macrocourbures (c’est-à-dire des niveaux de pertes plus faibles). Le modèle A1a.4 supporte des systèmes de transmission à une seule ou plusieurs longueurs d'onde au voisinage de 850 nm à 950 nm. La sous-catégorie A1b s’applique aux fibres à gradient d’indice de 62,5/125 mm et la sous-catégorie A1d à celles de gradient d’indice de 100/140 mm. D’autres applications comprennent, mais sans s’y limiter, ce qui suit: - les systèmes téléphoniques de courtes distances à haut débit, les réseaux de distribution et les réseaux locaux qui transportent des données, la voix et/ou des services vidéo; - et les connexions par fibres intra ou inter bâtiment dans les locaux utilisateurs, englobant les centres de traitement de données, les réseaux locaux (LAN), les réseaux dédiés sauvegarde (SAN), les centraux téléphoniques privés (PABX), la vidéo, les différentes utilisations de multiplexage, l’utilisation d’une installation de câble du réseau téléphonique externe et les différentes utilisations associées. Trois types d’exigences s’appliquent à ces fibres: - les exigences générales, qui sont définies dans l’IEC 60793-2; - des exigences spécifiques communes aux fibres multimodales de catégorie A1, couvertes par le présent document et qui sont données à l’Article 5; - des exigences particulières applicables à des sous-catégories et des modèles particuliers de fibres ou à des applications spécifiques, qui sont définies dans les annexes de spécifications normatives. Cette sixième édition annule et remplace la cinquième 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: ajout du modèle A1a.4 de fibre qui supporte des systèmes de transmission à une seule ou plusieurs longueurs d'onde au voisinage de 850 nm à 950 nm. Mots clés: fibres optiques des sous-catégories A1a, A1b et A1d

Optična vlakna - 2-10. del: Specifikacije izdelka - Področna specifikacija za mnogorodovna vlakna kategorije A1 (IEC 60793-2-10:2019)

Standard IEC 60793-2-10:2017 se uporablja za podkategorije optičnih vlaken A1a, A1b in A1d. Ta vlakna se uporabljajo ali jih je mogoče vgraditi v opremo za prenos informacij in optične kable. Podkategorija A1a se uporablja za vlakno z zveznim lomnim likom 50/125 mm. Kot modeli so opredeljene štiri stopnje pasovne širine: A1a.1, A1a.2, A1a.3 in A1a.4. Vsaka od teh stopenj je določena za dve ravni odpornosti na makropregibe, ki ju ločujemo s priponama »a« ali »b«. Modeli s pripono »a« ustrezajo ravnem običajne odpornosti na makropregibe. Modeli s pripono »b« ustrezajo ravnem izboljšane odpornosti na makropregibe (tj. večja odpornost). Model A1a.4 podpira sisteme za prenos prek enotne valovne dolžine ali sisteme za prenos prek več valovnih dolžin na razdalji od 850 nm do 950 nm.  Podkategorija A1b se uporablja za vlakno z zveznim lomnim likom 62,5/125 mm in podkategorija A1d se uporablja za vlakno z zveznim lomnim likom 100/140 mm. Drugi načini uporabe med drugim vključujejo:
– povezave kratkega dosega, sisteme z visoko bitno hitrostjo na področju telefonije, distribucijska in lokalna omrežja za prenos podatkov, glasovne in/ali video storitve;
– napeljave vlaken za povezave znotraj enega objekta in med več objekti na mestu uporabe, kot so podatkovna središča, lokalna omrežja (LAN), pomnilniška omrežja (SAN), zasebna telefonska omrežja (PBX), video storitve, različne uporabe multipleksiranja, uporaba zunanje telefonske kabelske opreme ter razne povezane vrste uporabe. Za ta vlakna veljajo tri vrste zahtev:
– splošne zahteve, kot so opredeljene v standardu IEC 60793-2;
– posebne zahteve, ki so skupne večrodovnim vlaknom kategorije A1 iz tega dokumenta in so navedene v točki 5;
– posebne zahteve, ki veljajo za posamezne podkategorije in modele vlaken, ali posebne načine uporabe, ki so opredeljene v normativnih dodatkih o specifikaciji.
Šesta izdaja razveljavlja in nadomešča peto izdajo, objavljeno leta 2015. Ta izdaja je tehnično popravljena izdaja. Ta izdaja vključuje naslednje pomembne tehnične spremembe glede na prejšnjo izdajo: dodatek modela vlakna A1a.4, ki podpira sisteme za prenos prek enotne valovne dolžine ali sisteme za prenos prek več valovnih dolžin na razdalji od 850 nm do 950 nm.
Ključne besede: podkategorije optičnih vlaken A1a, A1b in A1d.

General Information

Status
Published
Publication Date
18-Jul-2019
Current Stage
6060 - Document made available
Due Date
19-Jul-2019
Completion Date
19-Jul-2019

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SLOVENSKI STANDARD
SIST EN IEC 60793-2-10:2019
01-oktober-2019
Nadomešča:
SIST EN 60793-2-10:2018
Optična vlakna - 2-10. del: Specifikacije izdelka - Področna specifikacija za
mnogorodovna vlakna kategorije A1 (IEC 60793-2-10:2019)

Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1

multimode fibres (IEC 60793-2-10:2019)
Lichtwellenleiter - Teil 2-10: Produktspezifikationen - Rahmenspezifikation für
Mehrmodenfasern der Kategorie A1 (IEC 60793-2-10:2019)

Fibres optiques - Partie 2-10: Spécifications de produits - Spécification intermédiaire

pour les fibres multimodales de catégorie A1 (IEC 60793-2-10:2019)
Ta slovenski standard je istoveten z: EN IEC 60793-2-10:2019
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
SIST EN IEC 60793-2-10:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60793-2-10:2019
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SIST EN IEC 60793-2-10:2019
EUROPEAN STANDARD EN IEC 60793-2-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
ICS 33.180.10 Supersedes EN 60793-2-10:2017 and all of its
amendments and corrigenda (if any)
English Version
Optical fibres - Part 2-10: Product specifications - Sectional
specification for category A1 multimode fibres
(IEC 60793-2-10:2019)

Fibres optiques - Partie 2-10: Spécifications de produits - Lichtwellenleiter - Teil 2-10: Produktspezifikationen -

Spécification intermédiaire pour les fibres multimodales de Rahmenspezifikation für Mehrmodenfasern der Kategorie

catégorie A1 A1
(IEC 60793-2-10:2019) (IEC 60793-2-10:2019)

This European Standard was approved by CENELEC on 2019-06-26. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60793-2-10:2019 E
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SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
European foreword

The text of document 86A/1932/FDIS, future edition 7 of IEC 60793-2-10, 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 IEC 60793-2-10:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national level by (dop) 2020-03-26

publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-06-26

document have to be withdrawn

This document supersedes EN 60793-2-10:2017 and all of its amendments and corrigenda (if any).

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 60793-2-10:2019 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 61280-1-3 NOTE Harmonized as EN 61280-1-3
IEC 61280-1-4 NOTE Harmonized as EN 61280-1-4
IEC 60793-2-10:2017 NOTE Harmonized as EN 60793-2-10:2017 (not modified)
IEC 60794-1-1 NOTE Harmonized as EN 60794-1-1
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SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
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 60793-1-20 - Optical fibres - Part 1-20: Measurement EN 60793-1-20 -
methods and test procedures - Fibre
geometry
IEC 60793-1-21 - Optical fibres - Part 1-21: Measurement EN 60793-1-21 -
methods and test procedures - Coating
geometry
IEC 60793-1-22 - Optical fibres - Part 1-22: Measurement EN 60793-1-22 -
methods and test procedures - Length
measurement
IEC 60793-1-30 - Optical fibres - Part 1-30: Measurement EN 60793-1-30 -
methods and test procedures - Fibre proof
test
IEC 60793-1-31 - Optical fibres - Part 1-31: Measurement EN IEC 60793-1-31 -
methods and test procedures - Tensile
strength
IEC 60793-1-32 - Optical fibres - Part 1-32: Measurement EN IEC 60793-1-32 -
methods and test procedures - Coating
strippability
IEC 60793-1-33 - Optical fibres - Part 1-33: Measurement EN 60793-1-33 -
methods and test procedures - Stress
corrosion susceptibility
IEC 60793-1-40 - Optical fibres - Part 1-40: Attenuation EN IEC 60793-1-40 -
measurement methods
IEC 60793-1-41 - Optical fibres - Part 1-41: Measurement EN 60793-1-41 -
methods and test procedures - Bandwidth
IEC 60793-1-42 - Optical fibres - Part 1-42: Measurement EN 60793-1-42 -
methods and test procedures - Chromatic
dispersion
IEC 60793-1-43 - Optical fibres - Part 1-43: Measurement EN 60793-1-43 -
methods and test procedures - Numerical
aperture measurement
IEC 60793-1-46 - Optical fibres - Part 1-46: Measurement EN 60793-1-46 -
methods and test procedures - Monitoring of
changes in optical transmittance
IEC 60793-1-47 - Optical fibres - Part 1-47: Measurement EN IEC 60793-1-47 -
methods and test procedures -
Macrobending loss
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SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
IEC 60793-1-49 - Optical fibres - Part 1-49: Measurement EN IEC 60793-1-49 -
methods and test procedures - Differential
mode delay
IEC 60793-1-50 - Optical fibres - Part 1-50: Measurement EN 60793-1-50 -
methods and test procedures - Damp heat
(steady state) tests
IEC 60793-1-51 - Optical fibres - Part 1-51: Measurement EN 60793-1-51 -
methods and test procedures - Dry heat
(steady state) tests
IEC 60793-1-52 - Optical fibres - Part 1-52: Measurement EN 60793-1-52 -
methods and test procedures - Change of
temperature tests
IEC 60793-1-53 - Optical fibres - Part 1-53: Measurement EN 60793-1-53 -
methods and test procedures - Water
immersion tests
IEC 60793-2 - Optical fibres - Part 2: Product specifications EN 60793-2 -
- General
IEC 61280-4-1 2009 Fibre-optic communication subsystem test EN 61280-4-1 2009
procedures - Part 4-1: Installed cable plant -
Multimode attenuation measurement
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SIST EN IEC 60793-2-10:2019
IEC 60793-2-10
Edition 7.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 2-10: Product specifications – Sectional specification for category A1
multimode fibres
Fibres optiques –
Partie 2-10: Spécifications de produits – Spécification intermédiaire pour les
fibres multimodales de catégorie A1
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-6920-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 60793-2-10:2019
– 2 – IEC 60793-2-10:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 Abbreviated terms ......................................................................................................... 10

5 Specifications ................................................................................................................ 10

5.1 General ................................................................................................................. 10

5.2 Dimensional requirements ..................................................................................... 10

5.3 Mechanical requirements ...................................................................................... 12

5.4 Transmission requirements ................................................................................... 12

5.5 Environmental requirements ................................................................................. 14

5.5.1 General ......................................................................................................... 14

5.5.2 Mechanical environmental requirements (common to all fibres in

category A1) .................................................................................................. 15

5.5.3 Transmission environmental requirements ..................................................... 16

Annex A (normative) Specifications for sub-categories A1-OM2, A1-OM3, A1-OM4 and

A1-OM5 multimode fibres ...................................................................................................... 17

A.1 General ................................................................................................................. 17

A.2 Dimensional requirements ..................................................................................... 17

A.3 Mechanical requirements ...................................................................................... 18

A.4 Transmission requirements ................................................................................... 18

A.5 Environmental requirements ................................................................................. 20

Annex B (normative) Specifications for sub-category A1-OM1 multimode fibres ................... 21

B.1 General ................................................................................................................. 21

B.2 Dimensional requirements ..................................................................................... 21

B.3 Mechanical requirements ...................................................................................... 21

B.4 Transmission requirements ................................................................................... 22

B.5 Environmental requirements ................................................................................. 22

Annex C (normative) Specifications for sub-category A1d multimode fibres ......................... 23

C.1 General ................................................................................................................. 23

C.2 Dimensional requirements ..................................................................................... 23

C.3 Mechanical requirements ...................................................................................... 23

C.4 Transmission requirements ................................................................................... 24

C.5 Environmental requirements ................................................................................. 24

Annex D (normative) Fibre differential mode delay (DMD), calculated effective modal

bandwidth (EMB ) and calculated overfilled modal bandwidth (OMB ) requirements ............. 25

c c

D.1 A1-OM3 fibre DMD requirements .......................................................................... 25

D.1.1 General ......................................................................................................... 25

D.1.2 DMD templates .............................................................................................. 25

D.1.3 DMD interval masks ....................................................................................... 26

D.2 A1-OM3 fibre EMB requirements ......................................................................... 27

D.2.1 General ......................................................................................................... 27

D.2.2 Calculated effective bandwidth ...................................................................... 27

D.3 A1-OM4 DMD requirements .................................................................................. 29

D.3.1 General ......................................................................................................... 29

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SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 3 –

D.3.2 DMD templates .............................................................................................. 29

D.3.3 DMD interval masks ....................................................................................... 30

D.4 A1-OM4 fibre EMB requirements ......................................................................... 30

D.4.1 General ......................................................................................................... 30

D.4.2 Calculated effective bandwidth ...................................................................... 30

D.5 A1-OM5 fibre modal bandwidth requirements ........................................................ 30

D.5.1 General ......................................................................................................... 30

D.5.2 Calculated effective modal bandwidth ............................................................ 31

D.6 A1-OM2, A1-OM3, A1-OM4 and A1-OM5 calculated overfilled modal

bandwidth ............................................................................................................. 31

Annex E (informative) System, modal bandwidth, and transmitter considerations ................. 33

E.1 Background........................................................................................................... 33

E.2 System considerations .......................................................................................... 33

E.2.1 A1-OM3 and A1-OM4 fibres ........................................................................... 33

E.2.2 A1-OM5 fibre ................................................................................................. 33

E.3 Effective modal bandwidth (EMB) .......................................................................... 34

E.4 Transmitter encircled flux (EF) and centre wavelength requirements ..................... 37

E.4.1 Encircled flux ................................................................................................. 37

E.4.2 Centre wavelength for A1-OM3 and A1-OM4 fibres ........................................ 38

E.4.3 Centre wavelength for A1-OM5 fibre .............................................................. 38

Annex F (informative) Bandwidth nomenclature explanation ................................................. 40

Annex G (informative) Preliminary indications for items needing further study ...................... 41

G.1 Effective modal bandwidth (EMB) at 1 300 nm ...................................................... 41

G.2 Scaling of EMB with DMD ..................................................................................... 41

Annex H (informative) Applications and cabling categories supported by A1 fibres .............. 43

Annex I (informative) 1-Gigabit, 10-Gigabit, 25-Gigabit, 40-Gigabit and 100-Gigabit

Ethernet applications ............................................................................................................ 44

Bibliography .......................................................................................................................... 50

Figure 1 – Relation between bandwidths at 850 nm and 1 300 nm ........................................ 14

Figure D.1 – DMD template requirements ............................................................................. 26

Figure E.1 – Estimated minimum wide band EMB versus wavelength for A1-OM3 ................. 35

Figure E.2 – Estimated minimum wide band EMB versus wavelength for A1-OM4 ................. 36

Figure E.3 – Estimated minimum wide band EMB versus wavelength for A1-OM5 ................. 37

Figure E.4 – Approximate position of DMD weightings relative to the EF boundaries of

Equations (E.10) and (E.11) .................................................................................................. 38

Table 1 – Cross reference IEC A1 multimode fibre designations to IEC 60793-2-

10:2017 .................................................................................................................................. 8

Table 2 – Dimensional attributes and measurement methods ................................................ 11

Table 3 – Dimensional requirements common to category A1 fibres ...................................... 11

Table 4 – Additional dimensional attributes required in sub-category specifications .............. 11

Table 5 – Mechanical attributes and measurement methods ................................................. 12

Table 6 – Mechanical requirements common to category A1 fibres ....................................... 12

Table 7 – Transmission attributes and measurement methods .............................................. 13

Table 8 – Additional transmission attributes required in sub-category specifications ............ 13

Table 9 – Environmental exposure tests ............................................................................... 15

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SIST EN IEC 60793-2-10:2019
– 4 – IEC 60793-2-10:2019 © IEC 2019

Table 10 – Attributes measured for environmental tests ........................................................ 15

Table 11 – Strip force for environmental tests ....................................................................... 15

Table 12 – Tensile strength for environmental tests .............................................................. 16

Table 13 – Stress corrosion susceptibility for environmental tests ......................................... 16

Table 14 – Change in attenuation for environmental tests ..................................................... 16

Table A.1 – Dimensional requirements specific to A1-OM2, A1-OM3, A1-OM4 and A1-

OM5 fibres ............................................................................................................................ 18

Table A.2 – Mechanical requirements specific to A1-OM2, A1-OM3, A1-OM4 and A1-

OM5 fibres ............................................................................................................................ 18

Table A.3 – Transmission requirements specific to A1-OM2, A1-OM3, A1-OM4 and

A1-OM5 fibres ...................................................................................................................... 19

Table B.1 – Dimensional requirements specific to A1-OM1 fibres .......................................... 21

Table B.2 – Mechanical requirements specific to A1-OM1 fibres ........................................... 21

Table B.3 – Transmission requirements specific to A1-OM1 fibres ........................................ 22

Table C.1 – Dimensional requirements specific to A1d fibres ................................................ 23

Table C.2 – Mechanical requirements specific to A1d fibres .................................................. 23

Table C.3 – Transmission requirements specific to A1d fibres............................................... 24

Table D.1 – DMD templates for A1-OM3 fibres ...................................................................... 25

Table D.2 – DMD interval masks for A1-OM3 fibres .............................................................. 27

Table D.3 – DMD weightings ................................................................................................. 28

Table D.4 – DMD templates for A1-OM4 fibres ...................................................................... 30

Table D.5 – DMD interval masks for A1-OM4 fibres .............................................................. 30

Table D.6 – DMD weighting for OMB ................................................................................... 32

Table F.1 – Bandwidth nomenclature explanation ................................................................. 40

Table H.1 – Some standardised applications supported by A1-OM2, A1-OM3, A1-OM4,

A1-OM5 fibres and in some cases A1-OM1 fibres ................................................................. 43

Table I.1 – Summary of 1 Gb/s, 10 Gb/s, 25 Gb/s, 40 Gb/s and 100 Gb/s Ethernet

requirements and capabilities ............................................................................................... 45

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SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2-10: Product specifications –
Sectional specification for category A1 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 60793-2-10 has been prepared by subcommittee 86A: Fibres and

cables, of IEC technical committee 86: Fibre optics.

This seventh edition cancels and replaces the sixth edition published in 2017. This edition

constitutes a technical revision.

This edition includes the following significant change with respect to the previous edition:

revision of the naming convention for A1 multimode fibres, which better matches with those

found in ISO/IEC standards. These changes are outlined in the scope of this document along

with a cross reference table for the new names.
---------------------- Page: 11 ----------------------
SIST EN IEC 60793-2-10:2019
– 6 – IEC 60793-2-10:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/1932/FDIS 86A/1939/RVD

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 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 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.

---------------------- Page: 12 ----------------------
SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 7 –
OPTICAL FIBRES –
Part 2-10: Product specifications –
Sectional specification for category A1 multimode fibres
1 Scope

This part of IEC 60793 is applicable to optical fibre sub-categories A1-OM1, A1-OM2,

A1-OM3, A1-OM4, A1-OM5, and A1d. These fibres are used or can be incorporated in
information transmission equipment and optical fibre cables.

Sub-categories A1-OM2, A1-OM3, A1-OM4 and A1-OM5 apply to 50/125 µm graded index fibre

in four bandwidth grades. Each of these bandwidth grades is defined for two levels of

macrobend loss performance that are distinguished by "a" or "b" suffix. Those sub-categories

with suffix "a" are specified to meet traditional macrobend loss performance levels. Those sub-

categories with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss)

performance levels.

Sub-category A1-OM5 is specified to support single wavelength or multi-wavelength

transmission systems in the vicinity of 850 nm to 950 nm. Although not normatively specified,

bandwidth information covering this wavelength range is also included for A1-OM3 and

A1-OM4.

Sub-category A1-OM1 applies to 62,5/125 µm graded index fibre and sub-category A1d applies

to 100/140 µm graded index fibre.
Other applications include, but are not restricted t
...

SLOVENSKI STANDARD
SIST EN IEC 60793-2-10:2019
01-oktober-2019
Nadomešča:
SIST EN 60793-2-10:2018
Optična vlakna - 2-10. del: Specifikacije izdelka - Področna specifikacija za
večrodovna vlakna kategorije A1 (IEC 60793-2-10:2019)

Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1

multimode fibres (IEC 60793-2-10:2019)
Lichtwellenleiter - Teil 2-10: Produktspezifikationen - Rahmenspezifikation für
Mehrmodenfasern der Kategorie A1 (IEC 60793-2-10:2019)

Fibres optiques - Partie 2-10: Spécifications de produits - Spécification intermédiaire

pour les fibres multimodales de catégorie A1 (IEC 60793-2-10:2019)
Ta slovenski standard je istoveten z: EN IEC 60793-2-10:2019
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
SIST EN IEC 60793-2-10:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 60793-2-10:2019
---------------------- Page: 2 ----------------------
SIST EN IEC 60793-2-10:2019
EUROPEAN STANDARD EN IEC 60793-2-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
ICS 33.180.10 Supersedes EN 60793-2-10:2017 and all of its
amendments and corrigenda (if any)
English Version
Optical fibres - Part 2-10: Product specifications - Sectional
specification for category A1 multimode fibres
(IEC 60793-2-10:2019)

Fibres optiques - Partie 2-10: Spécifications de produits - Lichtwellenleiter - Teil 2-10: Produktspezifikationen -

Spécification intermédiaire pour les fibres multimodales de Rahmenspezifikation für Mehrmodenfasern der Kategorie

catégorie A1 A1
(IEC 60793-2-10:2019) (IEC 60793-2-10:2019)

This European Standard was approved by CENELEC on 2019-06-26. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60793-2-10:2019 E
---------------------- Page: 3 ----------------------
SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
European foreword

The text of document 86A/1932/FDIS, future edition 7 of IEC 60793-2-10, 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 IEC 60793-2-10:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national level by (dop) 2020-03-26

publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-06-26

document have to be withdrawn

This document supersedes EN 60793-2-10:2017 and all of its amendments and corrigenda (if any).

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 60793-2-10:2019 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 61280-1-3 NOTE Harmonized as EN 61280-1-3
IEC 61280-1-4 NOTE Harmonized as EN 61280-1-4
IEC 60793-2-10:2017 NOTE Harmonized as EN 60793-2-10:2017 (not modified)
IEC 60794-1-1 NOTE Harmonized as EN 60794-1-1
---------------------- Page: 4 ----------------------
SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
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 60793-1-20 - Optical fibres - Part 1-20: Measurement EN 60793-1-20 -
methods and test procedures - Fibre
geometry
IEC 60793-1-21 - Optical fibres - Part 1-21: Measurement EN 60793-1-21 -
methods and test procedures - Coating
geometry
IEC 60793-1-22 - Optical fibres - Part 1-22: Measurement EN 60793-1-22 -
methods and test procedures - Length
measurement
IEC 60793-1-30 - Optical fibres - Part 1-30: Measurement EN 60793-1-30 -
methods and test procedures - Fibre proof
test
IEC 60793-1-31 - Optical fibres - Part 1-31: Measurement EN IEC 60793-1-31 -
methods and test procedures - Tensile
strength
IEC 60793-1-32 - Optical fibres - Part 1-32: Measurement EN IEC 60793-1-32 -
methods and test procedures - Coating
strippability
IEC 60793-1-33 - Optical fibres - Part 1-33: Measurement EN 60793-1-33 -
methods and test procedures - Stress
corrosion susceptibility
IEC 60793-1-40 - Optical fibres - Part 1-40: Attenuation EN IEC 60793-1-40 -
measurement methods
IEC 60793-1-41 - Optical fibres - Part 1-41: Measurement EN 60793-1-41 -
methods and test procedures - Bandwidth
IEC 60793-1-42 - Optical fibres - Part 1-42: Measurement EN 60793-1-42 -
methods and test procedures - Chromatic
dispersion
IEC 60793-1-43 - Optical fibres - Part 1-43: Measurement EN 60793-1-43 -
methods and test procedures - Numerical
aperture measurement
IEC 60793-1-46 - Optical fibres - Part 1-46: Measurement EN 60793-1-46 -
methods and test procedures - Monitoring of
changes in optical transmittance
IEC 60793-1-47 - Optical fibres - Part 1-47: Measurement EN IEC 60793-1-47 -
methods and test procedures -
Macrobending loss
---------------------- Page: 5 ----------------------
SIST EN IEC 60793-2-10:2019
EN IEC 60793-2-10:2019 (E)
IEC 60793-1-49 - Optical fibres - Part 1-49: Measurement EN IEC 60793-1-49 -
methods and test procedures - Differential
mode delay
IEC 60793-1-50 - Optical fibres - Part 1-50: Measurement EN 60793-1-50 -
methods and test procedures - Damp heat
(steady state) tests
IEC 60793-1-51 - Optical fibres - Part 1-51: Measurement EN 60793-1-51 -
methods and test procedures - Dry heat
(steady state) tests
IEC 60793-1-52 - Optical fibres - Part 1-52: Measurement EN 60793-1-52 -
methods and test procedures - Change of
temperature tests
IEC 60793-1-53 - Optical fibres - Part 1-53: Measurement EN 60793-1-53 -
methods and test procedures - Water
immersion tests
IEC 60793-2 - Optical fibres - Part 2: Product specifications EN 60793-2 -
- General
IEC 61280-4-1 2009 Fibre-optic communication subsystem test EN 61280-4-1 2009
procedures - Part 4-1: Installed cable plant -
Multimode attenuation measurement
---------------------- Page: 6 ----------------------
SIST EN IEC 60793-2-10:2019
IEC 60793-2-10
Edition 7.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 2-10: Product specifications – Sectional specification for category A1
multimode fibres
Fibres optiques –
Partie 2-10: Spécifications de produits – Spécification intermédiaire pour les
fibres multimodales de catégorie A1
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-6920-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 60793-2-10:2019
– 2 – IEC 60793-2-10:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 Abbreviated terms ......................................................................................................... 10

5 Specifications ................................................................................................................ 10

5.1 General ................................................................................................................. 10

5.2 Dimensional requirements ..................................................................................... 10

5.3 Mechanical requirements ...................................................................................... 12

5.4 Transmission requirements ................................................................................... 12

5.5 Environmental requirements ................................................................................. 14

5.5.1 General ......................................................................................................... 14

5.5.2 Mechanical environmental requirements (common to all fibres in

category A1) .................................................................................................. 15

5.5.3 Transmission environmental requirements ..................................................... 16

Annex A (normative) Specifications for sub-categories A1-OM2, A1-OM3, A1-OM4 and

A1-OM5 multimode fibres ...................................................................................................... 17

A.1 General ................................................................................................................. 17

A.2 Dimensional requirements ..................................................................................... 17

A.3 Mechanical requirements ...................................................................................... 18

A.4 Transmission requirements ................................................................................... 18

A.5 Environmental requirements ................................................................................. 20

Annex B (normative) Specifications for sub-category A1-OM1 multimode fibres ................... 21

B.1 General ................................................................................................................. 21

B.2 Dimensional requirements ..................................................................................... 21

B.3 Mechanical requirements ...................................................................................... 21

B.4 Transmission requirements ................................................................................... 22

B.5 Environmental requirements ................................................................................. 22

Annex C (normative) Specifications for sub-category A1d multimode fibres ......................... 23

C.1 General ................................................................................................................. 23

C.2 Dimensional requirements ..................................................................................... 23

C.3 Mechanical requirements ...................................................................................... 23

C.4 Transmission requirements ................................................................................... 24

C.5 Environmental requirements ................................................................................. 24

Annex D (normative) Fibre differential mode delay (DMD), calculated effective modal

bandwidth (EMB ) and calculated overfilled modal bandwidth (OMB ) requirements ............. 25

c c

D.1 A1-OM3 fibre DMD requirements .......................................................................... 25

D.1.1 General ......................................................................................................... 25

D.1.2 DMD templates .............................................................................................. 25

D.1.3 DMD interval masks ....................................................................................... 26

D.2 A1-OM3 fibre EMB requirements ......................................................................... 27

D.2.1 General ......................................................................................................... 27

D.2.2 Calculated effective bandwidth ...................................................................... 27

D.3 A1-OM4 DMD requirements .................................................................................. 29

D.3.1 General ......................................................................................................... 29

---------------------- Page: 8 ----------------------
SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 3 –

D.3.2 DMD templates .............................................................................................. 29

D.3.3 DMD interval masks ....................................................................................... 30

D.4 A1-OM4 fibre EMB requirements ......................................................................... 30

D.4.1 General ......................................................................................................... 30

D.4.2 Calculated effective bandwidth ...................................................................... 30

D.5 A1-OM5 fibre modal bandwidth requirements ........................................................ 30

D.5.1 General ......................................................................................................... 30

D.5.2 Calculated effective modal bandwidth ............................................................ 31

D.6 A1-OM2, A1-OM3, A1-OM4 and A1-OM5 calculated overfilled modal

bandwidth ............................................................................................................. 31

Annex E (informative) System, modal bandwidth, and transmitter considerations ................. 33

E.1 Background........................................................................................................... 33

E.2 System considerations .......................................................................................... 33

E.2.1 A1-OM3 and A1-OM4 fibres ........................................................................... 33

E.2.2 A1-OM5 fibre ................................................................................................. 33

E.3 Effective modal bandwidth (EMB) .......................................................................... 34

E.4 Transmitter encircled flux (EF) and centre wavelength requirements ..................... 37

E.4.1 Encircled flux ................................................................................................. 37

E.4.2 Centre wavelength for A1-OM3 and A1-OM4 fibres ........................................ 38

E.4.3 Centre wavelength for A1-OM5 fibre .............................................................. 38

Annex F (informative) Bandwidth nomenclature explanation ................................................. 40

Annex G (informative) Preliminary indications for items needing further study ...................... 41

G.1 Effective modal bandwidth (EMB) at 1 300 nm ...................................................... 41

G.2 Scaling of EMB with DMD ..................................................................................... 41

Annex H (informative) Applications and cabling categories supported by A1 fibres .............. 43

Annex I (informative) 1-Gigabit, 10-Gigabit, 25-Gigabit, 40-Gigabit and 100-Gigabit

Ethernet applications ............................................................................................................ 44

Bibliography .......................................................................................................................... 50

Figure 1 – Relation between bandwidths at 850 nm and 1 300 nm ........................................ 14

Figure D.1 – DMD template requirements ............................................................................. 26

Figure E.1 – Estimated minimum wide band EMB versus wavelength for A1-OM3 ................. 35

Figure E.2 – Estimated minimum wide band EMB versus wavelength for A1-OM4 ................. 36

Figure E.3 – Estimated minimum wide band EMB versus wavelength for A1-OM5 ................. 37

Figure E.4 – Approximate position of DMD weightings relative to the EF boundaries of

Equations (E.10) and (E.11) .................................................................................................. 38

Table 1 – Cross reference IEC A1 multimode fibre designations to IEC 60793-2-

10:2017 .................................................................................................................................. 8

Table 2 – Dimensional attributes and measurement methods ................................................ 11

Table 3 – Dimensional requirements common to category A1 fibres ...................................... 11

Table 4 – Additional dimensional attributes required in sub-category specifications .............. 11

Table 5 – Mechanical attributes and measurement methods ................................................. 12

Table 6 – Mechanical requirements common to category A1 fibres ....................................... 12

Table 7 – Transmission attributes and measurement methods .............................................. 13

Table 8 – Additional transmission attributes required in sub-category specifications ............ 13

Table 9 – Environmental exposure tests ............................................................................... 15

---------------------- Page: 9 ----------------------
SIST EN IEC 60793-2-10:2019
– 4 – IEC 60793-2-10:2019 © IEC 2019

Table 10 – Attributes measured for environmental tests ........................................................ 15

Table 11 – Strip force for environmental tests ....................................................................... 15

Table 12 – Tensile strength for environmental tests .............................................................. 16

Table 13 – Stress corrosion susceptibility for environmental tests ......................................... 16

Table 14 – Change in attenuation for environmental tests ..................................................... 16

Table A.1 – Dimensional requirements specific to A1-OM2, A1-OM3, A1-OM4 and A1-

OM5 fibres ............................................................................................................................ 18

Table A.2 – Mechanical requirements specific to A1-OM2, A1-OM3, A1-OM4 and A1-

OM5 fibres ............................................................................................................................ 18

Table A.3 – Transmission requirements specific to A1-OM2, A1-OM3, A1-OM4 and

A1-OM5 fibres ...................................................................................................................... 19

Table B.1 – Dimensional requirements specific to A1-OM1 fibres .......................................... 21

Table B.2 – Mechanical requirements specific to A1-OM1 fibres ........................................... 21

Table B.3 – Transmission requirements specific to A1-OM1 fibres ........................................ 22

Table C.1 – Dimensional requirements specific to A1d fibres ................................................ 23

Table C.2 – Mechanical requirements specific to A1d fibres .................................................. 23

Table C.3 – Transmission requirements specific to A1d fibres............................................... 24

Table D.1 – DMD templates for A1-OM3 fibres ...................................................................... 25

Table D.2 – DMD interval masks for A1-OM3 fibres .............................................................. 27

Table D.3 – DMD weightings ................................................................................................. 28

Table D.4 – DMD templates for A1-OM4 fibres ...................................................................... 30

Table D.5 – DMD interval masks for A1-OM4 fibres .............................................................. 30

Table D.6 – DMD weighting for OMB ................................................................................... 32

Table F.1 – Bandwidth nomenclature explanation ................................................................. 40

Table H.1 – Some standardised applications supported by A1-OM2, A1-OM3, A1-OM4,

A1-OM5 fibres and in some cases A1-OM1 fibres ................................................................. 43

Table I.1 – Summary of 1 Gb/s, 10 Gb/s, 25 Gb/s, 40 Gb/s and 100 Gb/s Ethernet

requirements and capabilities ............................................................................................... 45

---------------------- Page: 10 ----------------------
SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2-10: Product specifications –
Sectional specification for category A1 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 60793-2-10 has been prepared by subcommittee 86A: Fibres and

cables, of IEC technical committee 86: Fibre optics.

This seventh edition cancels and replaces the sixth edition published in 2017. This edition

constitutes a technical revision.

This edition includes the following significant change with respect to the previous edition:

revision of the naming convention for A1 multimode fibres, which better matches with those

found in ISO/IEC standards. These changes are outlined in the scope of this document along

with a cross reference table for the new names.
---------------------- Page: 11 ----------------------
SIST EN IEC 60793-2-10:2019
– 6 – IEC 60793-2-10:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/1932/FDIS 86A/1939/RVD

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 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 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.

---------------------- Page: 12 ----------------------
SIST EN IEC 60793-2-10:2019
IEC 60793-2-10:2019 © IEC 2019 – 7 –
OPTICAL FIBRES –
Part 2-10: Product specifications –
Sectional specification for category A1 multimode fibres
1 Scope

This part of IEC 60793 is applicable to optical fibre sub-categories A1-OM1, A1-OM2,

A1-OM3, A1-OM4, A1-OM5, and A1d. These fibres are used or can be incorporated in
information transmission equipment and optical fibre cables.

Sub-categories A1-OM2, A1-OM3, A1-OM4 and A1-OM5 apply to 50/125 µm graded index fibre

in four bandwidth grades. Each of these bandwidth grades is defined for two levels of

macrobend loss performance that are distinguished by "a" or "b" suffix. Those sub-categories

with suffix "a" are specified to meet traditional macrobend loss performance levels. Those sub-

categories with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss)

performance levels.

Sub-category A1-OM5 is specified to support single wavelength or multi-wavelength

transmission systems in the vicinity of 850 nm to 950 nm. Although not normatively specified,

bandwidth information covering this wavelength range is also included for A1-OM3 and

A1-OM4.

Sub-category A1-OM1 applies to 62,5/125 µm graded index fibre and sub-category A1d applies

to 100/140 µm graded index fibre.
Other applications include, bu
...

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