Y. Zhu et al., 1.28Tbit/s (32 x 40Gbit/s) transmission over 1000 km NDSF employing distributed Raman amplification and active gain flattening, ELECTR LETT, 37(1), 2001, pp. 43-45
Transmission of 32 x 40Gbit/s ETDM channels has been demonstrated over stra
ight-line 1000km NDSF with 100GHz channel spacing and a record 160 and 200k
m amplifier spacing. Active Raman gain flattening allowed viable performanc
e without forward error correction, optical regeneration and polarisation i
nterleaving.