2.5 Gbit/s-9720 km, 10 Gbit/s-6480 km transmissioninthe FSA commercial system with 90 km spaced opticalamplifier repeaters and dispersion-managed cables

Abstract
The authors report 2.5 and 10 Gbit/s transoceanic distance transmission in a commercial FSA optical amplifier system which has 90 km repeater spacing. The unique fibre dispersion management technique and amplifier passband management scheme used in the system are successfully demonstrated. The SNR improvement achieved with polarisation scrambling is also reported.