Dual-core polarization diverse silicon photonic add/drop switch supporting 400Gb/s PDM-16QAM

We implement a silicon photonic 16-port add-or-drop, with on-chip polarization diversity including polarization splitter rotators and dual switch cores. PDL, DGD of express and add were 0.3dB, <0.1ps and 1.1dB, <3ps respectively. 200Gb/s and 400Gb/s PDM-16QAM signals were transmitted, with 0.1dB ROSNR penalty at 200Gb/s.