32x10 Gb/s DWDM transmission thorugh a 160 km cascade of semiconductor optical amplifiers in light and moderate saturation regimes

A 160-km DWDM link with 320-Gb/s (32×10Gb/s) capacity and 50-GHz channel spacing is demonstrated using four in-line semiconductor optical amplifiers. The link performance does not significantly vary with- and without a saturating reservoir channel.