Srax: A Low Crosstalk and Insertion Loss 5×5 Optical Router for Optical Network-on-Chip

Abstract

Optical network-on-chip is a promising on-chip communication paradigm owing to higher bandwidth and lower latency. However, in the optical network, we have to consider the intrinsic characteristic of crosstalk noise, which has a significant impact on the overall performance of ONoC. In this paper, we proposed a low crosstalk and insertion loss 5×5 optical router called Srax with 15 microring resonators and 12 waveguide crossings, which has less microring resonators and waveguide crossings in comparison to other five-port router architectures. Experiments show that the Srax has lower insertion loss than Cygnus, Crossbar and Optical Router, which are 5.5%, 27.4% and 6.9% lower respectively. Similarly, Srax also has lower crosstalk compared to Cygnus and Optical Router, which are 1.0% and 4.3 % lower respectively.