Title :
Optimization of signal pulse duty factor in long-distance optical amplifier systems
Author :
Maeda, Hideki ; Murakami, Makoto ; Ohkawa, Norio ; Imai, Takamasa
Author_Institution :
NTT Network Service Syst. Labs., Kanagawa, Japan
Abstract :
The dependence of the 10-Gb/s/ch long-distance transmission performance on the signal pulse duty factor is studied by numerical calculations and experiments. We find that duty factors /spl les/0.5 are suitable in both single channel and wavelength-division-multiplexing (WDM) transmission systems given typical dispersion allocation configurations. The suppression of cross-phase-modulation-induced waveform distortion by optimizing the duty factor is significant as increasing the number of channels in WDM transmission systems.
Keywords :
frequency allocation; optical fibre communication; optical fibre dispersion; optical modulation; optimisation; performance evaluation; phase modulation; wavelength division multiplexing; 10 Gbit/s; WDM transmission systems; cross-phase-modulation-induced waveform distortion; dispersion allocation configurations; long-distance optical amplifier systems; long-distance transmission performance; numerical calculations; signal pulse duty factor optimisation; single channel; wavelength-division-multiplexing; Fiber nonlinear optics; Nonlinear optics; Optical amplifiers; Optical distortion; Optical mixing; Optical pulses; Pulse amplifiers; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
