EN IEC 60793-2-50:2019

Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres

This part of IEC 60793 is applicable to optical fibre categories B-652, B-653, B-654, B-655, B-656 and B-657. A map illustrating the connection of IEC designations to ITU-T designations is shown in Table 1. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. Three types of requirements apply to these fibres: - general requirements, as defined in IEC 60793-2; - specific requirements common to the class B single-mode fibres covered in this document and which are given in Clause 5; - particular requirements applicable to individual fibre categories or specific applications, which are defined in Annexes A to F. For some fibre categories (shown in the relevant family specifications), there are subcategories that are distinguished on the basis of difference in transmission attribute specifications. The designations for these sub-categories are documented in the individual family specifications. Table 1 shows a map from the IEC designations to the ITU-T recommendations. The table also provides the normative annex in this document that contains the detailed specification as well as the name used to describe this fibre type in IEC 60793-2-50:2015. The ITU-T recommendations as well as the IEC categories/sub-categories within each recommendation are given. In some cases, as for Recommendation G.652, a given IEC designation maps to multiple categories in the ITU-T because the ITU-T categories are distinguished by cabled fibre attribute (PMDQ) performance which are not distinguished in the IEC fibre specifications.

Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation für Einmodenfasern der Kategorie B

Fibres optiques - Partie 2-50: Spécifications de produits - Spécification intermédiaire pour les fibres unimodales de classe B

L'IEC 60793-2-50:2015 est applicable aux fibres optiques des catégories B1.1, B1.2, B1.3, B2, B4, B5 et B6. Un tableau illustrant la correspondance des désignations IEC avec les Recommandations de l'UIT-T figure à l'Annexe I. Ces fibres sont utilisées ou peuvent être intégrées dans des équipements pour la transmission de l'information et dans des câbles à fibres optiques. 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 unimodales de classe B, couvertes par la présente norme, et qui sont données dans l'Article 5; - des exigences particulières applicables à des catégories particulières de fibres ou à des applications données, qui sont définies dans les Annexes A à G. Pour certaines catégories de fibres (indiquées dans les spécifications de famille correspondantes), il existe des sous-catégories qui se distinguent les unes des autres par leurs différences de spécifications d'attributs de transmission. Les désignations pour ces sous-catégories sont documentées dans les spécifications de famille individuelles Cette cinquième édition annule et remplace la quatrième édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - alignement des exigences avec les Recommandations G.654 (2012-10) et G.657 (2012-10) de l'UIT-T; - ajout d'une nouvelle sous-catégorie B1.2_d; - modification des sous-catégories B6 en termes d'affaiblissement et de coefficient de dispersion chromatique. Mots clés: équipements pour la transmission de l'information, câbles à fibres optiques

Optična vlakna - 2-50. del: Specifikacije izdelka - Področna specifikacija za enorodovna vlakna razreda B (IEC 60793-2-50:2018)

Standard IEC 60793-2-50:2015 se uporablja za kategorije optičnih vlaken B1.1, B1.2, B1.3, B2, B4, B5 in B6. V dodatku I je prikaz povezav oznak IEC z oznakami ITU-T. Ta vlakna se uporabljajo ali se lahko vgradijo v opremo za prenos informacij in kable z optičnimi vlakni. Za ta vlakna veljajo tri vrste zahtev:
– splošne zahteve, kot so opredeljene v standardu IEC 60793-2;
– posebne zahteve za enorodna vlakna razreda B, ki jih zajema ta standard in so navedene v točki 5;
– posebne zahteve, ki se uporabljajo za posamezne kategorije vlaken ali posebne vrste uporabe, ki so določene v dodatkih A do G. Pri nekaterih kategorijah vlaken (prikazano v ustreznih skupinskih specifikacijah) obstajajo podkategorije, ki se razlikujejo glede na razliko v specifikacijah atributa prenosa. Oznake za te podkategorije so navedene v posameznih skupinskih specifikacijah. Peta izdaja razveljavlja in nadomešča četrto izdajo, objavljeno leta 2012. Ta izdaja je tehnično popravljena izdaja. Ta izdaja vključuje naslednje znatne tehnične spremembe glede na prejšnjo izdajo:
– usklajuje zahteve s priporočiloma ITU-T G.654 (2012-10) in G.657 (2012-10);
– dodaja novo podkategorijo B1.2_d;
– spreminja podkategorije B6 v smislu koeficienta slabljenja in kromatske disperzije.
Ključne besede: oprema za prenos informacij, optični kabli

General Information

• Status: Published
• Publication Date: 28-Feb-2019
• Withdrawal Date: 17-Jan-2022
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: CLC/TC 86A - Optical fibres and optical fibre cables
• Drafting Committee: IEC/SC 86A - IEC_SC_86A
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Mar-2019
• Completion Date: 01-Mar-2019
• Ref Project: SIST EN IEC 60793-2-50:2019 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres (IEC 60793-2-50:2018)

Relations

• Replaces: EN 60793-2-50:2016 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres
• Effective Date: 05-Mar-2019
• Revised: FprEN IEC 60793-2-50:2024 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class b single-mode fibres
• Effective Date: 26-Jul-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2019
1DGRPHãþD
SIST EN 60793-2-50:2016
2SWLþQDYODNQDGHO6SHFLILNDFLMHL]GHOND3RGURþQDVSHFLILNDFLMD]D
HQRURGRYQDYODNQDUD]UHGD%,(&
Optical fibres - Part 2-50: Product specifications - Sectional specification for class B
single-mode fibres (IEC 60793-2-50:2018)
Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation für
Einmodenfasern der Kategorie B (IEC 60793-2-50:2018)
Fibres optiques - Partie 2-50: Spécifications de produits - Spécification intermédiaire
pour les fibres unimodales de classe B (IEC 60793-2-50:2018)
Ta slovenski standard je istoveten z: EN IEC 60793-2-50:2019
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 IEC 60793-2-50

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 33.180.10 Supersedes EN 60793-2-50:2016
English Version
Optical fibres - Part 2-50: Product specifications - Sectional
specification for class B single-mode fibres
(IEC 60793-2-50:2018)
Fibres optiques - Partie 2-50: Spécifications de produits - Lichtwellenleiter - Teil 2-50: Produktspezifikationen -
Spécification intermédiaire pour les fibres unimodales de Rahmenspezifikation für Einmodenfasern der Kategorie B
classe B (IEC 60793-2-50:2018)
(IEC 60793-2-50:2018)
This European Standard was approved by CENELEC on 2019-01-18. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60793-2-50:2019 E

European foreword
The text of document 86A/1884/FDIS, future edition 6 of IEC 60793-2-50, 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 60793-2-50:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-10-18
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-01-18
document have to be withdrawn
This document supersedes EN 60793-2-50:2016.
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 60793-2-50:2018 was approved by CENELEC as a
European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60793-1-1 NOTE Harmonized as EN 60793-1-1
IEC 60794-3 NOTE Harmonized as EN 60794-3

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 series Optical fibres EN 60793-1 series
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 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 60793-1-34 -  Optical fibres - Part 1-34: Measurement EN 60793-1-34 -
methods and test procedures - Fibre curl
IEC 60793-1-40 -  Optical fibres - Part 1-40: Measurement EN 60793-1-40 -
methods and test procedures - Attenuation
IEC 60793-1-42 -  Optical fibres - Part 1-42: Measurement EN 60793-1-42 -
methods and test procedures - Chromatic
dispersion
IEC 60793-1-44 -  Optical fibres - Part 1-44: Measurement EN 60793-1-44 -
methods and test procedures - Cut-off
wavelength
IEC 60793-1-45 -  Optical fibres - Part 1-45: Measurement EN IEC 60793-1-45 -
methods and test procedures - Mode field
diameter
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
IEC 60793-1-48 -  Optical fibres - Part 1-48: Measurement EN 60793-1-48 -
methods and test procedures - Polarization
mode Dispersion
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 EN 60793-2 -
specifications - General
IEC 60794-2 -  Optical fibre cables - Part 2: Indoor cables EN 60794-2 -
- Sectional specification
IEC 60793-2-50 ®
Edition 6.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 2-50: Product specifications – Sectional specification for class B single-

mode fibres
Fibres optiques –
Partie 2-50: Spécifications de produits – Spécification intermédiaire pour les

fibres unimodales de classe B
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-6280-1

– 2 – IEC 60793-2-50:2018 © IEC 2018
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
4 Abbreviated terms and symbols . 10
5 Specifications . 10
5.1 General . 10
5.2 Dimensional requirements . 10
5.3 Mechanical requirements . 11
5.4 Transmission requirements . 12
5.5 Environmental requirements . 13
5.5.1 General . 13
5.5.2 Optical environmental requirements – Attenuation . 14
5.5.3 Mechanical environmental requirements . 14
Annex A (normative) Family specification for category B-652 Dispersion unshifted
single-mode fibres . 16
A.1 General . 16
A.2 Dimensional requirements . 16
A.3 Mechanical requirements . 17
A.4 Transmission requirements . 17
A.5 Hydrogen ageing for sub-category B-652.D . 19
A.6 Environmental requirements . 19
Annex B (normative) Family specification for category B-653 Dispersion shifted
single-mode fibres . 20
B.1 General . 20
B.2 Dimensional requirements . 20
B.3 Transmission requirements . 21
B.3.1 General . 21
B.3.2 Chromatic dispersion coefficient requirement for sub-category B-653.A
fibres . 21
B.3.3 Chromatic dispersion coefficient requirement for sub-category B-653.B
fibres . 22
B.4 Environmental requirements . 22
Annex C (normative) Family specification for category B-654 cut-off shifted single-
mode fibres . 23
C.1 General . 23
C.2 Dimensional requirements . 23
C.3 Mechanical requirements . 23
C.4 Chromatic dispersion parameters for B-654.E fibres . 25
C.5 Environmental requirements . 25
Annex D (normative) Family specification for category B-655 non-zero dispersion
shifted single-mode fibres . 26
D.1 General . 26
D.2 Dimensional requirements . 26
D.3 Mechanical requirements . 26
D.4 Transmission requirements . 27
D.4.1 General .
...