Performance Optimization for Mesh-based Optical Networks-on-Chip with WDM

Abstract

Wavelength division multiplexing (WDM) technique can effectively improve the property of optical networks-on-chip (ONoCs). Nevertheless, there are some inescapable factors to impede the performance improvement, power loss, linear crosstalk noise, as well as nonlinear noise due to four wave mixing (FWM), just to name a few. For higher expansibility, an angle optimization is applied to the basic device layer and optical router layer in WDM-based ONoCs, which the waveguide crossing angle 60° or 120° is used to replace the traditional crossing angle 90°. Moreover, We establish the theoretical analysis model for angle optimized ONoCs with WDM based on mesh topology, and a numerical simulation example is explored for the ONoCs with mesh architecture whose optical routers are chosen to be Crux and optimized crossbar routers, in all routers waveguide crossing angles are optimized. It can be obtained from the simulations that the average optical signal-to-noise ratio (OSNR) can be improved and average bit-error-rate (BER) can be reduced about 1.5 dB with the angle optimization.