Combatting fibre nonlinearity in symmetrical compensation schemes using RZ-modulation format at 120 km amplifier spacing over standard fibre

摘要

It is shown, that in standard fibre transmissions operating at 10 Gb/s and 40 Gb/s at high amplifier spacings of 120 km the impact of fibre nonlinearity is diminished by symmetrical ordering of dispersion compensating fibres allowing 1200 km RZ-transmission for 1 dB penalty.