Demonstration of soliton WDM transmission at 6 and 7 × 10 Gbit/s, error free over transoceanic distances

Abstract
The authors have achieved soliton transmission in six and seven WDM channels of 10 Gbit/s each, ’error free‘ (measured BER < 10-9) over paths of 11.4 and 9.4 Mm, respectively. This result was made possible through the combined use of sliding-frequency filters and dispersion-tapered fibre spans.