Long-range soliton interactions in periodically amplified fiber links

In this study we examine the physical mechanism that prevents the use of short optical pulses in high bit-rate transmission systems. Continuum-induced soliton–soliton interaction is the cause of long-range as well as enhanced direct soliton–soliton interaction. We show, by means of a purely analytical approach, that soliton–continuum interaction causes position wiggling of the soliton and that when this effect is applied to a random sequence of solitons it becomes an additional cause of timing jitter.