Title :
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
Author :
Suzuki, Ken-Ichi ; Masuda, Hiroji ; Kawai, Shigeaki ; Aida, Kyoko ; Nakagawa, Koichi
Author_Institution :
NTT Optical Network Syst. Labs., Kanagawa
fDate :
11/6/1997 12:00:00 AM
Abstract :
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
Keywords :
erbium; fibre lasers; optical fibre communication; wavelength division multiplexing; 1531 to 1607 nm; 2.5 Gbit/s; 250 km; bidirectional WDM transmission; erbium-doped fluoride fibre amplifier; erbium-doped silicate fibre amplifier; gain-band erbium-doped fibre amplifier; repeater; single-mode fibre;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19971342
