40 WDM 2.5 Gbit/s transmission is successfully demonstrated over 12000 km for the first time, using widely gain-flattened low-noise 980 nm-pumped EDFAs and a large effective area fibre. The gain shape of the transmission line was almost maintained over 18000 km
Published in:
Electronics Letters
(Volume:34
,
Issue:
4
)
Date of Publication: 19 Feb 1998