Single Microring-Based 2×2 Silicon Photonic Crossbar Switches

Realizing small-footprint and energy-efficient optical switching fabrics is of crucial importance to solve the data movement challenges faced by optical interconnection networks. This article demonstrates silicon photonic 2×2 full crossbar switching functionality based on a single microring. The ultra-compact device is shown to successfully switch data channels from two input ports simultaneously.

Data channels in both multiple and same wavelength switching experiments are measured to be error-free. Simulation shows that by optimizing some of the microring parameters crosstalk could be reduced. This work confirms the applicability of a single microring as a 2×2 switch element for on-chip optical interconnects.

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