Process considerations for 80-GHz high-performance p-i-n silicon photodetector for optical interconnect

In this work, design considerations for highperformance silicon photodetector are thoroughly investi- gated. Besides the critical dimensions of device, guidelines for process architecture are suggested. Abiding by those criteria for improving both direct-current (DC) and alternating-current (AC) perfor- mances, a high-speed low-operation power silicon photodetector based on p-i-n structure for optical interconnect has been designed by device simulation. An f-3dB of 80 GHz at an operating voltage of 1 V was obtained.