Ultra-scalable Microring-based Architecture for Spatial-and-Wavelength Selective Switching

We introduce a novel microring-based architecture for spatial-and-wavelength selective switching, reducing the switch elements required for non-blocking operations by an order of magnitude. The fabricated 4x4x4λ silicon photonics network demonstrates more than 40 dB of crosstalk suppression, and negative to zero power penalties per path.