This Recommendation describes a single-mode fibre with chromatic dispersion coefficient (absolute
value) that is greater than some non-zero value throughout the wavelengths larger than 1530 nm.
ITU-T G.655-2006 history
2009ITU-T G.655-2009 Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable (Study Group 15)
2006ITU-T G.655-2006 Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable Study Group 15