Narrowband 2/spl times/10 Gbit/s quaternary intensity modulation based on duobinary modulation in two polarizations with unequal amplitudes

摘要

Two duobinary 10 Gbit/s data streams with orthogonal polarizations and unequal amplitudes allow to generate a narrowband 20 Gbit/s quaternary intensity modulation. Sensitivity and CD tolerance of this generation scheme are -17.6 dBm and 530 psm, respectively.