International Telecommunication Union/ITU Telcommunication Sector

Characteristics of a single-mode optical fibre and cable
 N G.652

Annotation

This Recommendation describes a single-mode optical fibre cable which has the zero-dispersion wavelength around 1310 nm and which is optimized for use in the 1310 nm wavelength region, and which can also be used in the 1550 nm region (where this fibre is not optimized). Both analogue and digital transmission can be used with this fibre.

The geometrical, optical, transmission and mechanical parameters are described below in three categories of attributes:

• fibre attributes are those attributes that are retained throughout cabling and installation;

• cable attributes that are recommended for cables as they are delivered;

• link attributes that are characteristic of concatenated cables, describing estimation methods of system interface parameters based on measurements, modelling, or other considerations. Information for link attributes and system design are in Appendix I.

This Recommendation, and the different performance categories found in the tables of clause 7, is intended to support the following related system Recommendations:

• [ITU-T Rec. G.957].

• [ITU-T Rec. G.691].

• [ITU-T Rec. G.692].

• [ITU-T Rec. G.693].

• [ITU-T Rec. G.959.1].

• [ITU-T Rec. G.695].

NOTE – Depending on the length of the links, dispersion accommodation can be necessary for some G.691, G.692 or G.959.1 application codes.