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SFS-EN IEC 60793-2-50:2025:en
Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres
Soveltamisala
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IEC 60793-2-50:2025 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 4;
- particular requirements applicable to individual fibre categories or specific applications, which are defined in Annex A to Annex F.
For some fibre categories (shown in the relevant family specifications), there are sub-categories 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.
This seventh edition cancels and replaces the sixth edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) The addition of a 200 µm coating nominal outer diameter option for B-654A, B, C fibres in Annex C
Tämän julkaisun valmistelusta Suomessa vastaa SESKO ry, puh. 050 571 6048.
IEC 60793-2-50:2025 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 4;
- particular requirements applicable to individual fibre categories or specific applications, which are defined in Annex A to Annex F.
For some fibre categories (shown in the relevant family specifications), there are sub-categories 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.
This seventh edition cancels and replaces the sixth edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) The addition of a 200 µm coating nominal outer diameter option for B-654A, B, C fibres in Annex C
Tämän julkaisun valmistelusta Suomessa vastaa SESKO ry, puh. 050 571 6048.
Tuoteryhmä(t)
Sidokset
Velvoittavat viittaukset
EN 60793-1-20:2014 Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry
EN 60793-1-21:2002 Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry
EN 60793-1-30:2011 Optical fibres - Part 1-30: Measurement methods and test procedures - Fibre proof test
EN 60793-1-21:2002 Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry
EN 60793-1-30:2011 Optical fibres - Part 1-30: Measurement methods and test procedures - Fibre proof test
Näytä julkaisuun liittyvät velvoittavat viittaukset
Tekninen komitea
Vahvistuspäivä
04.07.2025
Julkaisupäivä
08.07.2025
Painos
2
Sivumäärä
44
Julkaisun kieli
englanti