Abstract

Transmission control in optical soliton communications is quite effective for extending transmission distance by stabilising the soliton pulse against various perturbations [1]. Control methods such as the use of guiding filters (with its frequency fixed or sliding) [2] and synchronous modulation [3] were studied not only to stabilise the signal pulse but also to eliminate low-power noise; thereby it is expected that long-distance transmission will be achieved with a large signal-to-noise ratio maintained. In systems using dispersion-managed solitons, such control methods may not be needed because of the enhanced pulse energy and reduced Gordon-Haus timing jitter of such systems [4]. However, transmission controls which make use of the nonlinear nature of the pulses are still an effective and natural means to improve the performance of DM soliton systems [5].

© 2003 Optical Society of America