Title :
Inline amplifier transmission experiments over 4500 km at 2.5 Gb/s
Author :
Saito, Shigeru ; Murakami, Makoto ; Naka, Akira ; Fukada, Youichi ; Imai, Takamasa ; Aiki, Mamoru ; Ito, Takeshi
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
fDate :
8/1/1992 12:00:00 AM
Abstract :
An inline amplifier system was constructed with erbium-doped fiber amplifiers spaced at 100 km and 80 km intervals. The system transmits 2.5 Gb/s signals over 2500 km with continuous-phase frequency-shift-keying heterodyne detection and over 4500 km with intensity-modulation direct detection. With respect to amplifier output signal power levels, it is experimentally shown that there exists a dynamic range within which long-distance signal transmission can be achieved with only small receiver sensitivity degradation. The range´s upper and lower limits are determined by fiber nonlinearities and amplifier noise characteristics, respectively
Keywords :
erbium; fibre lasers; frequency shift keying; optical communication equipment; optical fibres; optical modulation; 2.5 Gbit/s; 2500 km; 4500 km; Er3+-doped fibre amplifiers; amplifier noise characteristics; amplifier output signal power levels; continuous-phase frequency-shift-keying heterodyne detection; dynamic range; fiber nonlinearities; inline amplifier system; intensity-modulation direct detection; long-distance signal transmission; receiver sensitivity degradation; Degradation; Dynamic range; Erbium-doped fiber amplifier; Frequency; Low-noise amplifiers; Optical amplifiers; Optical fiber amplifiers; Optical fibers; Power amplifiers; System performance;
Journal_Title :
Lightwave Technology, Journal of
