Abstract

In this Letter, we propose and demonstrate a high-speed and power-efficient thermo-optic switch using an adiabatic bend with a directly integrated silicon heater to minimize the heat capacity and therein maximize the performance of the thermo-optic switch. A rapid, τ=2.4μs thermal time constant and a low electrical power consumption of Pπ=12.7mW/π-phase shift were demonstrated representing a Pπτ product of only 30.5mW·μs in a compact device with a phase shifter of only 10μm long.

© 2013 Optical Society of America

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