Title :
50 GHz spaced, 32×10 Gbit/s dense WDM transmission in zero-dispersion region over 640 km of dispersion-shifted fibre with multiwavelength distributed Raman amplification
Author :
Suzuki, H. ; Takachio, N. ; Masuda, H. ; Koga, M.
Author_Institution :
NTT Network Innovation Labs., Kanagawa, Japan
fDate :
7/8/1999 12:00:00 AM
Abstract :
The authors present, for the first time, 32×10 Gbit/s transmission (50 GHz channel spacing) in the zero-dispersion region of dispersion-shifted fibre (DSF) by employing multiwavelength distributed Raman amplification. Each transmission span is bi-directionally pumped at two wavelengths, 1450 and 1465 nm, to construct a wideband distributed Raman amplifier. A hybrid amplifier formed by a gain-flattened erbium-doped fibre amplifier and a gain-flattened distributed Raman amplifier is used to successfully realise dense WDM transmission in the zero-dispersion region over 8×80 km of DSF
Keywords :
Raman lasers; optical fibre amplifiers; optical fibre communication; optical fibre dispersion; telecommunication channels; wavelength division multiplexing; 10 Gbit/s; 1450 nm; 1465 nm; 320 Gbit/s; 640 km; 80 km; GHz channel spacing; GHz spaced Gbit/s dense WDM transmission; bi-directionally pumped; dense WDM transmission; dispersion-shifted fibre; gain-flattened distributed Raman amplifier; gain-flattened erbium-doped fibre amplifier; hybrid amplifier; multiwavelength distributed Raman amplification; transmission span; wideband distributed Raman amplifier; zero-dispersion region;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990776
