IEC 60793-2-50:2008

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

IEC 60793-2-50:2008 is applicable to optical fibre types B1.1, B1.2, B1.3, and categories B2, B4, B5 and B6. A map illustrating the connection of IEC designations to ITU-T designations is shown in Annex I. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. The main technical changes of this edition include:
- aligns the requirements with the relevant ITU-T Recommendations, including tightening the tolerances of many parameters;
- adds a new category, B5, which corresponds to the fibres defined in ITU-T Recommendation G.656; and
- adds a new category, B6, which corresponds to the fibres defined in ITU-T Recommendation G.657.

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

La CEI 60793-2-50:2008 est applicable aux fibres optiques de type B1.1, B1.2, B1.3 et de catégorie B2, B4, B5 et B6. Une table illustrant la correspondance des désignations CEI par rapport aux désignations 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. Cette révision technique
- aligne les exigences avec les Recommandations UIT-T applicables, y compris le resserrement des tolérances de nombreux paramètres;
- ajoute une nouvelle catégorie, B5, qui correspond aux fibres définies dans la Recommandation UIT-T G.656; et
- ajoute une nouvelle catégorie, B6, qui correspond aux fibres définies dans la Recommandation UIT-T G.657.

General Information

• Status: Published
• Publication Date: 26-May-2008
• 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: DELPUB - Deleted Publication
• Completion Date: 13-Dec-2012

Relations

• Revised: IEC 60793-2-50:2012 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres
• Effective Date: 05-Sep-2023
• Revises: IEC 60793-2-50:2004 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60793-2-50
Edition 3.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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
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IEC 60793-2-50
Edition 3.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 33.180.10 ISBN 2-8318-9824-2

– 2 – 60793-2-50 © IEC:2008
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .7
4 Abbreviations and symbols .7
5 Specifications .8
5.1 General .8
5.2 Dimensional requirements .8
5.3 Mechanical requirements.9
5.4 Transmission requirements .10
5.5 Environmental requirements .11
5.5.1 Optical environmental requirements.12
5.5.2 Mechanical environmental requirements .12
Annex A (normative) Family specification for B1.1 single-mode fibres.14
Annex B (normative) Family specification for B1.2 single-mode fibres.16
Annex C (normative) Family specification for B1.3 single-mode fibres.18
Annex D (normative) Family specification for B2 single-mode fibres.21
Annex E (normative) Family specification for B4 single-mode fibres.24
Annex F (normative) Family specification for B5 single-mode fibres .27
Annex G (normative) Family specification for B6 single-mode fibres .30
Annex H (informative) System design information for B4 single-mode fibres .33
Annex I (informative) Map from IEC nomenclature to ITU-T recommendations .36
Bibliography.37

Figure H.1 – B4_d chromatic dispersion coefficient limits.34
Figure H.2 – B4_e chromatic dispersion coefficient limits.35

Table 1 – Dimensional attributes and measurement methods.8
Table 2 – Requirements common to class B fibres.9
Table 3 – Mechanical attributes and test methods.9
Table 4 – Requirements common to class B fibres.10
Table 5 – Transmission attributes and measurement methods .10
Table 6 – Requirements common to class B fibres.11
Table 7 – Additional attributes required in the family specifications.11
Table 8 – Environmental exposure tests .11
Table 9 – Attributes measured .11
Table 10 – Change in attenuation for environmental tests.12
Table 11 – Coating strip force for environmental tests.12
Table 12 – Tensile strength for environmental tests .12
Table 13 – Stress corrosion susceptibility for environmental tests.13
Table A.1 – Dimensional requirements specific to B1.1 fibres .14
Table A.2 – Mechanical requirements specific to B1.1 fibres.14

60793-2-50 © IEC:2008 – 3 –
Table A.3 – Transmission requirements specific to B1.1 fibres.15
Table B.1 – Dimensional requirements specific to B1.2 fibres .16
Table B.2 – Mechanical requirements specific to B1.2 fibres.17
Table B.3 – Transmission requirements specific to B1.2 fibres.17
Table C.1 – Dimensional requirements specific to B1.3 fibres .18
Table C.2 – Mechanical requirements specific to B1.3 fibres.19
Table C.3 – Transmission requirements specific to B1.3 fibres .19
Table D.1 – Dimensional requirements specific to B2 fibres .21
Table D.2 – Mechanical requirements specific to B2 fibres.22
Table D.3 – Transmission requirements specific to B2 fibres .22
Table E.1 – Dimensional requirements specific to B4 fibres .24
Table E.2 – Mechanical requirements specific to B4 fibres.25
Table E.3 – Transmission requirements specific to B4 fibres.25
Table F.1 − Dimensional requirements specific to B5 fibres .27
Table F.2 − Mechanical requirements specific to B5 fibres .28
Table F.3 − Transmission requirements specific to B5 fibres.28
Table G.1 − Dimensional requirements specific to B6 fibres.30
Table G.2 − Mechanical requirements specific to B6 fibres .31
Table G.3 – Transmission requirements specific to B6 fibres .32
Table H.1 – Examples for λ = 1 530 nm and λ = 1 565 nm .33
min max
Table I.1 – Map of IEC to ITU .36

– 4 – 60793-2-50 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2-50: Product specifications –
Sectional specification for class B single-mode fibres

FOREWORD
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