Lh. Spiekman et al., 8 x 10 Gb/s DWDM transmission over 240 km of standard fiber using a cascade of semiconductor optical amplifiers, IEEE PHOTON, 12(8), 2000, pp. 1082-1084
Eight 10-Gb/s DWDM channels spaced 200 GHz around 1565 nm are transmitted o
ver six 10-km spans of standard SMF using five inline semiconductor optical
amplifiers (SOAs), SOAs are also used as booster and pre-amplifier in the
transmitter and receiver, so that only SOAs are used in the experiment. For
all channels, bit-error-rate penalties of 0.5-1.5 dB relative to baseline
have been measured, with no evidence of error-rate floors.