Influence of chromatic dispersion on optical transmission of 16QAM signals interleaved with reference light

We numerically investigated influence of chromatic dispersion on an optical transmission of 16 quadrature amplitude modulation (QAM) signals interleaved with reference light. Simulation results showed that values of dispersion tolerance, satisfying 3-dB eye opening penalty, of 5-, 10-, and 20-Gbaud interleaved 16QAM were 630-, 156-, and 38-ps/nm, respectively.