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The escalating need for expansive data bandwidth, and the resulting capacityconstraints of the single mode fiber (SMF) have positioned the 2-${\mu}$mwaveband as a prospective window for emerging applications in opticalcommunication. This has initiated an ecosystem of silicon photonic componentsin the region driven by CMOS compatibility, low cost, high efficiency andpotential for large-scale integration. In this study, we demonstrate a plasmadispersive, 4 ${\times}$ 4 electro-optic switch operating at the 2-${\mu}$mwaveband with the shortest switching times. The demonstrated switch operatesacross a 45-nm bandwidth, with 10-90% rise and 90-10% fall time of 1.78 ns and3.02 ns respectively. In a 4 ${\times}$ 4 implementation, crosstalk below -15dB and power consumption below 19.15 mW across all 16 ports are indicated. Theresult brings high-speed optical switching to the portfolio of devices at thepromising waveband.

High-speed 4 ${\times}$ 4 silicon photonic electro-optic switch, operating at the 2 {\mu}m waveband