Abstract
We demonstrate a broadband low-loss nonvolatile 2×2 silicon directional coupler switch based on phase-change material Sb2Se3. The switch has a low insertion loss of ~0.5 dB, a compact footprint of ~41 µm, and less than -10 dB crosstalk across ~33 nm bandwidth around 1550nm.
© 2022 The Author(s)
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