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Bidirectional 10-channel 2.5 Gbit/s WDM transmission over 250 km using 76 nm (1531-1607 nm) gain-band bidirectional erbium-doped fibre amplifiers

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5 Author(s)
K. -I. Suzuki ; NTT Optical Network Syst. Labs., Kanagawa ; H. Masuda ; S. Kawai ; K. Aida
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The widest, seamless, 76 nm (1531-1607 nm) 3 dB gain-band bidirectional amplifier is realised by combining an erbium-doped fluoride fibre amplifier (1531-1562 nm) and a gain-flattened erbium-doped silicate fibre amplifier (1562-1607 nm) in a novel configuration of gain-band separation between upstream and downstream signals. Bidirectional 10-channel WDM transmission at 2.5 Gbit/s over a 250 km conventional singlemode fibre is successfully demonstrated using our amplifiers as two bidirectional repeaters

Published in:

Electronics Letters  (Volume:33 ,  Issue: 23 )