SOLITONS WITH GAUSSIAN TAILS IN DISPERSION-MANAGED COMMUNICATION-SYSTEMS USING GRATINGS

We examine the transmission of optical pulses in fibre communication s ystems with dispersion management. It is shown that solitons with Gaus sian tails may be formed by the adoption of gratings to periodically c ompensate a pulse chirp. Fast decaying Gaussian tails allow us to prov ide denser information packing in comparison with sech-type soliton tr ansmission. The discovered pulse is an attractive candidate for use as information carrier in optical transmission systems with an ultra-lar ge capacity of around 100 Gbit/s. It is shown that a variational metho d can be effectively used to describe the dynamics of the breathing so liton. (C) 1997 Elsevier Science B.V.