SDGI's Non-Zero Dispersion Shifted Single Mode Fiber G. 655 is comprehensively optimized for attenuation and dispersion performance at the 1550 nm operating wavelength. The standard specifies the geometrical, mechanical, and transmission attributes of a single-mode optical fibre which has the absolute value of the chromatic dispersion coefficient greater than some non-zero value throughout the wavelength range from 1530 nm to 1565 nm. 65x series and the IEC 60793-2-50, this post will only introduce the simpler ITU-T G. Six. No fiber break and no sheath damage. • Feature: Compliant with the requirements of 10-40Gb/s transmission system at C and L band.