Title :
128 channel, 480 km FSK-DD transmission experiment using 0.98 μm pumped erbium-doped fibre amplifiers and a tunable gain equaliser
Author :
Oda, K. ; Fukutoku, Mitsunori ; Toba, H. ; Kominato, Toshimi
Author_Institution :
NTT Transmission Syst. Labs., Yokosuka
fDate :
6/9/1994 12:00:00 AM
Abstract :
128 channel, 622 Mbit/s FSK-DD transmission is demonstrated using dispersion-shifted fibres, total fibre length of 480 km, with 13 inline 0.98 μm pumped erbium-doped fibre amplifiers (EDFAs) and a tunable gain equaliser. The gain imbalance and noise figure of the 0.981 μm pumped EDFAs are small compared to those of 1.48 μm pumped EDFAs, and the residual gain imbalance can be compensated for by just one waveguide-type tunable gain equaliser. As a result, all channels were successfully transmitted with power penalties of less than 1 dB
Keywords :
equalisers; fibre lasers; frequency shift keying; optical communication equipment; 0.98 micron; 480 km; 622 Mbit/s; EDFAs; FSK-DD transmission experiment; dispersion-shifted fibres; gain imbalance; noise figure; power penalties; pumped erbium-doped fibre amplifiers; residual gain imbalance; tunable gain equaliser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940630
