Transmission performance of the spectrally shaped DP-16QAM transmitter with MC-DBP.
(a) The experimentally measured reach curve (symbols) shows the maximum reach recorded to achieve a BER below 1.5·10−2 for SC-DBP and MC-DBP. Numerical simulations (solid lines) are also displayed. (b) Received BER (pre SD-FEC) for all seven channels after transmission over 5890 km of SMF-28 ULL fibre for the EDC only and MC-DBP cases. The corresponding received constellations for the central channel are shown as insets (i) and (ii), respectively.