Implementation of soliton transmission in long-haul submarine communication systems

In this paper we have shown analytical results indicating expected design space for 10 Gbit/s and 20 Gbit/s, 6000 km soliton systems operating without in-line soliton control. In particular we have examined the dependence on repeater spacing and have considered the benefit expected from the use of forward-error-correction coding techniques. Typical system margins have been incorporated in the impairment budget. We have seen that for 10 Gbit/s operation the use of FEC is expected to give a significant design space with repeater spacings of up to 60 km being possible. At 20 Gbit/s we see that Gordon-Haus jitter prevents required performance margins from being met at any repeater spacing. This implies the requirement for soliton control in the form of frequency guiding or synchronous modulation.<>