Abstract
We propose and experimentally demonstrate an on-chip all-optical
multicasting (AOM) for 40 Gbit/s mode-division-multiplexed quadrature
phase-shift keying (MDM-QPSK) signals based on a parallel
dispersion-engineered multimode nonlinear silicon waveguide. Five
dual-mode multicast wavelengths are successfully obtained on the
generate idlers, and the power penalties of all the multicast channels
are less than 1.1 dB at the bit error rate (BER) of 3.8×10-3. The
dual-mode AOM scheme has the potential to promote the ability of optical
cross-connect in practical hybrid multiplexed networks including MDM
channels.