10 Gbit/s optical soliton transmission experiment in a comb-like dispersion profiled fiber loop

We performed 10 Gbit/s optical soliton transmission experiment over 2,000 km with bit error rate of <10/sup -9/ in a comb-like dispersion profiled fiber loop of 80 km amplifier spacing which corresponds to nearly the twice of dispersion distance. We construct a recirculation loop using comb-like dispersion profiled fiber (CDPF) using standard single mode fiber and dispersion shifted fiber with the total length of 80 km to demonstrate a 10 Gbit/s optical soliton transmission.