Multi-carrier 1.44-Tb/s Silicon Photonic Coherent Receiver using IQ Imbalance Compensation

We present a polarization-diversity coherent receiver that enables wavelength-multiplexed reception without arrayed waveguide gratings. We compensate in-phase and quadrature imbalance using a MIMO equalizer, enabling a 1.44-Tb/s capacity of wavelength-division-multiplexed and polarization-division-multiplexed 16-ary quadrature-amplitude-modulation signals.