Soliton transmission under pulse position modulation in optical fibres

A new optical pulse train configuration that may propagate with high stabil ity, in normal and anomalous dispersion regimes, in optical fibres is propo sed and simulated using pulse position modulation (PPM) coding. The high st ability is achieved by simultaneous propagation of two infinite and periodi c trains of bright pulses in normal and anomalous dispersion regimes (solit ons) in a single-mode optical fibre. This configuration could lead to trans mission velocities around 300 Gb/s with good stability under PPM coding.