Title :
Wide-bandwidth and long-distance WDM transmission using highly gain-flattened hybrid amplifier
Author :
Kawai, Shingo ; Masuda, Hiroji ; Suzuki, Ken-Ichi ; Aida, Kazuo
Author_Institution :
NTT Network Innovation Labs., Kanagawa, Japan
fDate :
7/1/1999 12:00:00 AM
Abstract :
A 1.5-dB gain-flatness over 67 nm is achieved with a novel hybrid amplifier comprised of a distributed Raman amplifier pumped at two wavelengths and an erbium-doped fluoride fiber amplifier. Fourteen 2.5-Gb/s signals spanning 65 nm are successfully transmitted over 900 km using the new amplifiers. Low-noise characteristics compared to the same transmission line with discrete erbium-doped fiber amplifiers are also confirmed.
Keywords :
Raman lasers; erbium; optical communication equipment; optical fibre amplifiers; optical pumping; wavelength division multiplexing; 1.5 dB; 2.5 Gbit/s; 35 Gbit/s; 900 nm; Er-doped fluoride fiber amplifier; Gb/s signals; discrete erbium-doped fiber amplifiers; distributed Raman amplifier; erbium-doped fluoride fiber amplifier; highly gain-flattened hybrid amplifier; hybrid amplifier; low-noise characteristics; transmission line; wide-bandwidth long-distance WDM transmission; Bandwidth; Broadband amplifiers; Distributed amplifiers; Erbium-doped fiber amplifier; High power amplifiers; Optical amplifiers; Optical fiber amplifiers; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
