Volterra-Based Reconfigurable Nonlinear Equalizer for Coherent OFDM |
A reconfigurable nonlinear equalizer (RNLE) based on inverse Volterra series transfer function is proposed for dual-polarization (DP) and multiband coherent optical orthogonal frequency-division multiplexing (OFDM) signals. It is shown that the RNLE outperforms by 2 dB the linear equalization in a 260-Gb/s DP-OFDM system at 1500 km. The RNLE improves the tolerance to inter/intraband nonlinearities, being independent on polarization tributaries, modulation format, signal bit rate, subcarrier number, and distance.
Giacoumidis E, Aldaya I, Jarajreh MA, Tsokanos A, Le ST, Farjady F, Jaouën Y, Ellis AD, Doran NJ