Error-free soliton transmission at 20 Gbit/s over7150 km through all-optical synchronous phase modulation

Abstract
All-optical soliton synchronous phase modulation through transmission fibre is shown to enable error-free propagation of 20 Gbit/s signals up to 7150 km without the need for dispersion management. Tolerance to imperfect clock-signal synchronisation is characterised experimentally.