Abstract
Silicon photonics has emerged as a promising solution to address the interconnect bottleneck in high performance computing (HPC) systems and data centers. Silicon photonics provides unprecedented I/O bandwidth, enabling ultrahigh aggregated bandwidth (~ 10 Tbps), high bandwidth density (~ Tbps/mm), and high energy efficiency (~ pJ/bit). In addition, silicon photonics also enable optical switching with large radix and short switching time. This talk will provide an overview of the state of the art of silicon photonic switches, with emphasis on new micro-electromechanical-system (MEMS)-actuated switching mechanism. Large scale switches with 64x64 and 128x128 port counts have been demonstrated, as well as wavelength-selective switches with 8x8 ports and 8 wavelengths. Future scaling to even larger port count will be discussed.
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