Silicon electro-optic modulators using p-i-n diodes embedded 10-micron-diameter microdisk resonators.

We demonstrate a silicon electro-optic modulator using a 10-micron-diameter microdisk resonator with a laterally integrated p-i-n diode surrounding essentially the entire microdisk. Our experiments reveal a modulation bandwidth of 510 MHz using a Q ~ 16,900 resonance mode under a square-wave drive voltage of ~0.9 V forward bias and ~-6 V reverse bias.