Photonic crystal $4{\times }4$ dynamic hitless routers for integrated photonic NoCs

Abstract

Contemporary, emerging and exigent breakthroughs in chip multiprocessors (CMPs) lead to atrocious performance and deficit communication between the processor cores in the integrated chips. Photonic network on chip (PNoC) is a worthwhile tactic for the CMP design to attain the excessive performance and efficient communication. Photonic crystal ring resonator-hinged optical router is the delineated pivotal component which has the potential to be exerted on PNoCs to diminish the obstacles in chip multiprocessor with high bandwidth capacity, low transmission delay, low energy dissipation, low crosstalk, etc., Elemental construction of photonic crystal (PC) router of $4{\times }4$ structures have been formulated by the comprisal of $1{\times }2$ and $2{\times }2$ router basic building blocks to review the efficacy of the transmitting behavior between the cores of the processor. Signal transmission for wavelength gamut of 1500–1600 nm is taken for the examination, and the allowed wavelengths toward the end port are tabulated. The signal propagation and analysis are based on plane wave expansion method and finite-difference time-domain method. Crosstalk (CT) and insertion loss (IL) are the crucial determinants of PC ring resonated routers. On the result of the analysis, maximum CT of − 15.1017 dB at 1567 nm and maximum IL of 1.73 dB at 1520 nm are obtained. The diminutive structures of the router in the size of $33~\upmu \hbox {m}\times 36~\upmu \hbox {m}$ have been depicted to place the footprints on the integrated photonics of ultra-compact device employment.