On-Chip Router Elements Based on Silicon Hybrid Plasmonic Waveguide

We have proposed and investigated micro-ring add-drop switch and M-Z interferometric element for on-chip router applications based on silicon hybrid plasmonic waveguide. The proposed silicon hybrid plasmonic waveguide possesses lower propagation loss compared with conventional plasmonic metal-insulator-metal waveguide. By employing this low loss waveguide, it is found that the proposed ring add-drop switch possesses high transmission efficiency (-1 dB), and the extinction ratio can be as high as 30 dB at 1.556 ~ μm . In addition, the transmission efficiency of drop port for the M-Z interferometric element can be -1.15 dB at 1.55 ~ μm . The designed elements are essential for the on-chip router in optical interconnect.