800 Gbps Integrated Silicon Photonics Receiver Chip Based on Cascaded Mach-Zehnder Interferometer (MZI) Lattice Filters

We have successfully demonstrated an integrated polarization-diversified
$8\times 100$
Gbps Silicon Photonics Receiver chip, which is composed of an edge coupler, a polarization splitter-rotator, two cascaded Mach-Zehnder Interferometer (MZI) lattice filters, and high-speed germanium photodetector (GeSi PD) array. We tested the bandwidth of the GeSi detector
$( > 40\text{GHz})$
and measured the eye diagram of the receiver chip with 53.125Gbaud PAM4 signal for each channel.