CSA Group Optical fibres - Part 2-70: Product specifications - Sectional specification for polarization-maintaining fibres IEC 60793-2-70:2017

IEC 60793-2-70: 2017 This part of IEC 60793 is applicable to optical fibre types D1, D2, D3, as described inTable 1. These fibres are polarization-maintai ning 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-maintai ning 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. Table 1– Categories of glass core/glass clad polarization-maintai ning fibres Category Type Description D1 Polarization-maintai ning fibre suitable for use at 980 nm This category of polarization-maintai ning fibre is optimised for polarization-maintai ning ability in the 980 nm region. This fibre is used for erbium-doped fibre amplifier. D2 Polarization-maintai ning fibre suitable for use at 1 310 nm This category of polarization-maintai ning fibre is optimised for polarization-maintai ning ability and connection property of category B fibres in the 1 310 nm region. D3 Polarization-maintai ning fibre suitable for use at 1 550 nm This category of polarization-maintai ning fibre is optimised for polarization-maintai ning ability and connection property of category B fibres in the 1 550 nm region.