Method and apparatus for line regeneration of a signal transmitted by synchronous modulation of wavelength division multiplexed solitons, and an optical telecommunications system using the method

摘要

The method involves performing recovery of a clock signal from a WDM signal and synchronous modulation of solitons at the recovered clock rate. The distance between the transmitter and a first modulator or between successive modulators along the optical link is calculated to ensure the synchronism of different wavelength signals. The regeneration of solitons on the line is controlled by the synchronous modulation of solitons using an optical modulator, recovery of the clock signal and multi-channel filtering at the modulator output. Lengths of fibre with different dispersions can be positioned in the link to manage dispersion along the whole channel.