Abstract: A solid state photonics circuit having a liquid crystal (LC) layer for beam steering. The LC layer can provide tuning of an array of waveguides by controlling the application of voltage to the liquid crystal. The application of voltage to the liquid crystal can be controlled to perform beam steering with the light signal based on different tuning in each of the waveguides of the array. The waveguides are disposed in a substrate having an oxide or other insulating layer with an opening. The opening in the oxide layer exposes a portion of a path of the array of waveguides. The waveguides are exposed to the liquid crystal through the oxide opening, which allows the voltage changes to the liquid crystal to tune the optical signals in the waveguides.

Abstract: In general, in one aspect, an apparatus includes an optical bus arm and a ring resonator arm. The apparatus also includes first, second and third directional couplers between the optical bus arm and the ring resonator arm. A first tuner is included on one of the optical bus arm and the ring resonator arm between the first directional coupler and the second directional coupler. A second tuner is included on other of the optical bus arm and the ring resonator arm between the second directional coupler and the third directional coupler. A tuning mechanism is also included.