The authors demonstrate for the first time the transmission of a 4 x 1
0 Gbit/s OTDM data sequence over two unrepeatered links of 100 km of n
ondispersion shifted fibre. The experiment is enabled using midspan sp
ectral inversion and electroabsorption modulator sources and demultipl
exers, and results in a record bit-rate-distance product of 8.1 Tbit/s
km for a single channel over standard fibre.