Long-Haul 64 x 40 Gb/s DWDM Transmission over Commercial Fiber Types with Large Operating Margins

We report results on 40 Gb/s DWDM transmission over distances greater than 1000km on several commercially available fiber types using a single 53 nm transmission band. The use of a wide single-band is made possible by forward and backward Raman amplification and makes for an easier system design and better footprint. Large Q-margins are demonstrated for all tested configurations.