313 km transmission experiment at 1 Gbit/s using optical amplifiers and a low chirp laser

Abstract

The use of four in-line semiconductor laser amplifiers is reported in an optical fibre transmission experiment. Using direct detection at 1 Gbit/s, a transmission distance of 313 km of non-dispersion-shifted fibre was achieved. This is 142 km longer than previous experiments at similar data rates, and is the first time optical amplifiers have been used to improve transmission distance for fibre-optic communication systems.