Title :
Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier
Author :
Zhao, Mingshan ; Morthier, Geert ; Baets, Roel
Author_Institution :
Dept. of Inf. Technol., Ghent Univ., Belgium
fDate :
3/1/2002 12:00:00 AM
Abstract :
Theoretical and experimental results on the reduction of the intensity noise in spectrum-sliced wavelength-division-multiplexing systems using a saturated semiconductor optical amplifier (SOA) are presented. The influence of the injected current and the input power to the saturated SOA on the noise reduction and its bandwidth are studied. The optimum condition for a high noise suppression ratio and a large bandwidth is derived. For the optimum operation of the SOA, an increase of 13.5 dB in the intensity-noise-limited signal-to-noise ratio for a bitrate of 2.488 Gb/s and of 17.5 dB for a bitrate of 622 Mb/s are obtained experimentally in a single-stage SOA.
Keywords :
laser noise; optical communication equipment; optical saturation; optimisation; semiconductor device noise; semiconductor optical amplifiers; wavelength division multiplexing; 2.488 Gbit/s; 622 Mbit/s; SOA; high noise suppression ratio; injected current; input power; intensity noise reduction; intensity-noise-limited signal-to-noise ratio; large bandwidth; noise reduction; optimum condition; optimum operation; saturated SOA; saturated semiconductor optical amplifier; single-stage SOA; spectrum-sliced WDM systems; Bandwidth; Frequency; Noise reduction; Optical beams; Optical noise; Optical saturation; Semiconductor device noise; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
