Parallel Versus Serial Design of an Optical Receiver With Integrated Blue Photod

Abstract

This article first analytically compares the energy efficiency of a serial optical link with a parallel link with the same data throughput and bit error rate for interchip communication. The analysis predicts that more than 10× energy efficiency improvement is feasible at both TX and RX in a parallel optical link compared to the fastest serial link, depending on the technology. Next, the article presents the design of an optical receiver integrated with on-chip blue photodetectors for the parall