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

Optics;Applied Physics