IEC 60793-2-50:2012

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

IEC 60793-2-50:2012 is applicable to optical fibre categories B1.1, B1.2, B1.3, 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. This fourth edition cancels and replaces the third edition, published in 2008, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- aligns the requirements with the relevant ITU-T Recommendations;
- adds another option to the list of alternative primary coating diameter constructions in Table 2 and subsequent family specifications;
- related modification of coating strip force in Tables 4 and 11;
- removes the jumper cut-off wavelength in Table 5;
- modifies B6 sub-categories; aligns B6-b MFD on B1.3 MFD. Keywords: information transmission equipment and optical fibre cables

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

La CEI 60793-2-50:2012 est applicable aux fibres optiques des catégories B1.1, B1.2, B1.3, 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 quatrième édition annule et remplace la troisième édition, parue en 2008, et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- d'en aligner les exigences avec les Recommandations pertinentes de l'UIT-T;
- d'ajouter une autre option à la liste des conceptions avec d'autres diamètres possibles concernant le revêtement primaire figurant dans le Tableau 2 et aux spécifications de famille qui en découlent;
- ainsi que la modification associée concernant la force de dénudage figurant dans les Tableaux 4 et 11;
- de supprimer la longueur d'onde de coupure des jarretières dans le Tableau 5;
- de modifier les sous-catégories B6;
- d'aligner le diamètre de champ de mode de la fibre B6-b sur celui de la B1.3. Mots clés: transmission de l'information et dans des câbles à fibres optiques Le contenu du corrigendum de janvier 2014 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 12-Dec-2012
• 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: 19-Nov-2015

Relations

• Corrected By: IEC 60793-2-50:2012/COR1:2014 - Corrigendum 1 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single mode fibres
• Effective Date: 05-Sep-2023
• Revised: IEC 60793-2-50:2015 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres
• Effective Date: 05-Sep-2023
• Revises: IEC 60793-2-50:2008 - 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 4.0 2012-12
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
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IEC 60793-2-50 ®
Edition 4.0 2012-12
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
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 33.180.10 ISBN 978-2-83220-545-7

– 2 – 60793-2-50  IEC:2012
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 General . 11
5.5.2 Optical environmental requirements – Attenuation . 12
5.5.3 Mechanical environmental requirements . 12
Annex A (normative) Family specification for category B1.1 single-mode fibres . 14
Annex B (normative) Family specification for category B1.2 single-mode fibres . 16
Annex C (normative) Family specification for category B1.3 single-mode fibres . 18
Annex D (normative) Family specification for category B2 single-mode fibres . 21
Annex E (normative) Family specification for category B4 single-mode fibres . 24
Annex F (normative) Family specification for category B5 single-mode fibres . 27
Annex G (normative) Family specification for category B6 single-mode fibres . 30
Annex H (informative) System design information for category B4 single-mode fibres . 33
Annex I (informative) Map from IEC nomenclature to ITU-T recommendations . 36
Bibliography . 37

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

Table 1 – Dimensional attributes and measurement methods . 8
Table 2 – Requirements common to all category B fibres . 9
Table 3 – Mechanical attributes and test methods . 9
Table 4 – Requirements common to all category B fibres . 10
Table 5 – Transmission attributes and measurement methods . 10
Table 6 – Requirements common to all category 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 . 13
Table 13 – Stress corrosion susceptibility for environmental tests . 13
Table A.1 – Dimensional requirements specific to category B1.1 fibres . 14

60793-2-50  IEC:2012 – 3 –
Table A.2 – Mechanical requirements specific to category B1.1 fibres . 14
Table A.3 – Transmission requirements specific to category B1.1 fibres . 15
Table B.1 – Dimensional requirements specific to category B1.2 fibres . 16
Table B.2 – Mechanical requirements specific to category B1.2 fibres . 16
Table B.3 – Transmission requirements specific to category B1.2 fibres . 17
Table C.1 – Dimensional requirements specific to category B1.3 fibres . 18
Table C.2 – Mechanical requirements specific to category B1.3 fibres . 18
Table C.3 – Transmission requirements specific to category B1.3 fibres . 19
Table D.1 – Dimensional requirements specific to category B2 fibres . 21
Table D.2 – Mechanical requirements specific to category B2 fibres . 22
Table D.3 – Transmission requirements specific to category B2 fibres . 22
Table E.1 – Dimensional requirements specific to category B4 fibres . 24
Table E.2 – Mechanical requirements specific to category B4 fibres . 25
Table E.3 – Transmission requirements specific to category B4 fibres . 25
Table F.1 – Dimensional requirements specific to category B5 fibres . 27
Table F.2 – Mechanical requirements specific to category B5 fibres . 28
Table F.3 – Transmission requirements specific to category B5 fibres . 28
Table G.1 – Dimensional requirements specific to category B6 fibres . 30
Table G.2 – Mechanical requirements specific to category B6 fibres . 31
Table G.3 – Transmission requirements specific to category B6 fibres . 31
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:2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2-50: Product specifications –
Sectional specification for class B single-mode fibres

FOREWORD
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