Abstract

Recently, soliton transmission technology has matured considerably through the use of erbium-doped fiber amplifiers (EDFAs).^1,2 In order to show that the soliton transmission has several advantages over conventional IM/DD or coherent systems, it is now very important to undertake a single-pass long-distance high-speed data transmission experiment with pseudorandom signals, as has already been demonstrated in high-speed linear systems with NRZ signals.^3~5 We have reported 10 Gbit/s error-free soliton data transmission over 1200 km.⁶ In the present paper, we show for the first time that soliton data signals at 20 Gbit/s can be successfully transmitted over 1020 km under a completely penalty-free condition.

© 1992 Optical Society of America