280 Gb/s Dual-Polarization Transmitter using Ge-on-Si EAMs for Short-Reach Interconnects

We present a dual-polarization 4-level pulse amplitude modulation (PAM-4) transmission using two Ge-EAMs with a 2D grating coupler. Data rates at 280 Gb/s and 260 Gb/s for back-to-back and 500 m SMF transmission are demonstrated.