Hk. Kim et al., 10Gbit/s based WDM signal transmission over 500 km of NZDSF using semiconductor optical amplifier as the in-line amplifier, ELECTR LETT, 37(3), 2001, pp. 185-187
Long distance (over 500km) transmission of 10Gbit/s based wavelength divisi
on multiplexed signals using in-line semiconductor optical amplifiers (SOAs
) has been successfully demonstrated with a bit error rate (BER) better tha
n 10(-14) utilising the wavelength modulation technique. With the normal tr
ansmission scheme, there is an error floor mar the BER of 10(-4) regardless
of the transmission distance, which is due to the cross-gain modulation ef
fect in the SOA.