Experimental comparison of 40 Gbit/s RZand NRZ transmission over standard singlemode fibre

Abstract

40 Gbit/s transmission experiments on standard fibre (16 ps/km/nm) and with > 100 km amplifier spacing demonstrate that transmission lengths of 432 km for RZ and 218 km for NRZ modulation schemes are possible, under comparable experimental conditions and in agreement with theoretical studies.