G.655 is an international standard that describes the geometrical, mechanical, and transmission attributes of a single-mode optical fibre and cable, developed by the Standardization Sector of the International Telecommunication Union (ITU-T) that specifies one of the most popular types of single-mode optical fiber (SMF) cable.[1]
| Status | In force |
|---|---|
| Year started | 1996 |
| Latest version | (11/09) November 2009 |
| Organization | ITU-T |
| Committee | Study Group 15 |
| Related standards | G.651.1, G.652, G.657 |
| Domain | telecommunication |
| License | Freely available |
| Website | https://www.itu.int/rec/T-REC-G.655 |
Standard
The standard specifies the geometrical, mechanical, and transmission attributes of a single-mode optical fibre as well as its cable. The range of mode field diameter permitted in G.655 is 8 to 11 μm in non-zero dispersion-shifted fibre. G.655.C fibre has a maximum PMD link design value of 0.20 ps/sqrtkm, which is the lowest value recommended by ITU-T. G.655 has the cable cut-off wavelength and cable attenuation coefficients in the C and L bands.[2]