10 Gbit/s alternate polarisation soliton transmission over 300 km step-index fibre link with no in-line control
A straight-line in-field transmission was performed over a 300 km step-index fibre link installed between Roma and Pomezia using a 10 Gbit/s stream of 1550 nm alternate-polarisation solitons. Standard SDH 10 Gbit/s line terminals were used at the transmitter and receiver sides. Error-free transmission was obtained with optical amplifiers placed every 50 km and with no in-line soliton control. It is important to underline that in this case the large chromatic dispersion was compensated for by fibre non-linearity without resorting to chromatic dispersion compensators.
