D. Garthe et al., DEMONSTRATION OF 80GBIT S WDM TRANSMISSION OVER 537KM OF NONZERO DISPERSION SHIFTED FIBER WITHOUT IN-LINE DISPERSION MANAGEMENT OR GAIN EQUALIZATION/, Electronics Letters, 32(13), 1996, pp. 1217-1218
The authors have demonstrated 4 x 20Gbit/s WDM transmission over 537 k
m of non-zero dispersion shifted fibre without using in-line technique
s for managing the fibre dispersion or amplifier gain equalisation. Th
e sensitivity of all channels for a BER of 10(-9) was between -27.9 an
d -27.2dBm (2(31)-1 PRBS).