Strong time jitter reduction using solitons in hyperbolic dispersion managed fiber links

The authors analyze “sliding” dispersion management (DM) for fiber links in which the local average group velocity dispersion (GVD) decreases with a l/z law. This method has two advantages since it tolerates an higher pulse energy, making a comparison with a classical dispersion management, the local average GVD is higher at the input link and lower at the link output and these characteristics permit a reduction of the time jitter and to operate with an higher pulse energy. They suggest to implement this scheme by simply using two kinds of fibers and changing the length of the compensating fibers that are supposed located at the optical amplifier positions. They analytically and numerically demonstrate that with this dispersion map the jitter can be deeply reduced with respect to a classical sawtooth DM method