IEC 60793-2-70-2017 pdf free

IEC 60793-2-70-2017 pdf free.Optical fibres – Part 2-70: Product specifications – Sectional specification for polarization-maintaining fibres.
This part of IEC 60793 is applicable to optical fibre types Dl, D2, D3, as described in Table 1. These fibres are polarization-maintaining fibre types, and are used or can be incorporated in information transmission equipment and optical fibre cable. These fibres are available for use in optical transport networks. Three types of requirements apply to these fibres:
— general requirements defined in IEC 60793-2;
— specific requirements common to the category D polarization-maintaining fibres covered in this document and which are given in Clause 4;
— particular requirements applicable to individual fibre types or specific applications, which are defined in Annexes A to C.
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.
IEC 60793-1-20:2014, Optical fibres — Part 1-20: Measurement methods and test procedures
— Fibre geometry
IEC 60793-1-21, Optical fibres — Part 1-21: Measurement methods and test procedures — Coating geometry
IEC 60793-1-22, Optical fibres — Part 1-22: Measurement methods and test procedures — Length measurement
IEC 60793-1-30, Optical fibres — Part 1-30: Measurement methods and test procedures — Fibre proof test
IEC 60793-1-40, Optical fibres — Part 1-40: Measurement methods and test procedures — Attenuation
IEC 60793-1-44:2011, Optical fibres — Part 1-44: Measurement methods and test procedures
— Cut-off wavelength
IEC 60793-1-45:2001, Optical fibres — Part 1-45: Measurement methods and test procedures Mode field diameter
IEC 60793-1-46, Optical fibres — Part 1-46: Measurement methods and test procedures — Monitoring of changes in optical transmittance
IEC 60793-1-52, Optical fibres — Part 1-52: Measurement methods and test procedures — Change of temperature tests
IEC 607931601, Optical fibres — Part 1-60: Measurement methods and test procedures — Beat length
IEC 607931612, Optical fibres — Part 1-61: Measurement methods and test procedures — Polarization crosstalk
IEC 60793-2, Optical fibres — Part 2: Product specifications — General
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Specifications
4.1 General
The fibre shall consist of a glass core and glass cladding in accordance with the construction of optical fibre category D — polarization-maintaining fibre — as given in IEC 60793-2.
The term “glass” usually refers to material consisting of non-metallic oxides.
4.2 Dimensional requirements
Relevant dimensional attributes and measurement methods are given in Table 2.IEC 60793-2-70 pdf download.