Increasing the transmission distance of a directly modulated laser with a chirped fibre Bragg grating dispersion compensator

摘要

The dependence of dispersion penalty on transmission length has been investigated in an optical communications system employing a directly modulated 2.5 Gbit/s DFB laser source and a fibre grating dispersion compensator. The 2 dB penalty transmission distance is approximately 520 km along standard monomode fibre, representing a great improvement over the 150 km range expected for a similar uncompensated system.