Y. Sun et al., TRANSMISSION OF 32-WDM 10-GB S CHANNELS OVER 640 KM USING BROAD-BAND,GAIN-FLATTENED ERBIUM-DOPED SILICA FIBER AMPLIFIERS/, IEEE photonics technology letters, 9(12), 1997, pp. 1652-1654
We report 640-km transmission of 32 wavelength-division-multiplexed (W
DM) 10-Gb/s channels with 100-GHz spacing (covering 25-nm bandwidth) u
sing wide dynamic range, gain-flattened erbium-doped silica fiber ampl
ifiers (EDSFA's) with an optical bandwidth of 35 nm, The EDSFA separat
ion is 80 km, the system gain is 140 dB and the total end of system ga
in nonuniformity among the 32 channels is 4.9 dB.