Patent ID: 9442314
Filing Date: 2016-09-13
CPC Classification: G02B,G02F

Claim Text:
1. An integrated circuit, comprising: a substrate; a buried-oxide layer disposed on the substrate; a semiconductor layer, disposed on the buried-oxide layer, that includes a ring resonator having a resonance wavelength, wherein the ring resonator includes a bus optical waveguide optically coupled to a ring-resonator optical waveguide; a ferroelectric layer, having an inner end and an outer end along a radial direction of the ring-resonator optical waveguide, disposed on the ring-resonator optical waveguide; an inner electrical contact disposed above the semiconductor layer and inside of the inner end along the radial direction, wherein the inner electrical contact is electrically coupled to the ferroelectric layer; and an outer electrical contact disposed above the semiconductor layer and outside of the outer end along the radial direction, wherein the outer electrical contact is electrically coupled to the ferroelectric layer; and wherein the inner electrical contact and the outer electrical contact are configured to generate an electrical field in a plane of the ferroelectric layer approximately parallel to a top surface of the ring-resonator optical waveguide to electro-optically tune the resonance wavelength.