4 × 20 Gbit/s soliton WDM transmission over2000 kmwith 100 km dispersion-compensated spans of standard fibre

Abstract

Soliton WDM transmission of four signals at 20 Gbit/s over 2000 km of standard fibre is achieved, with 100 km dispersion-compensated spans using polarisation multiplexing and pre-chirping. Single-wavelength transmission was performed over 2400 km. Without polarisation multiplexing, the transmission was limited to 1500 km.