Abstract: Microring resonators are devices that includes a set of waveguides that guide light, where at least one of the waveguides is a closed loop that operates to increase an intensity of the light over each round-trip. Microring resonators can be configured to operate as light filters and/or light modulators, and have application, for example, in the field of optical communication technology. Due to temperature sensitivity of microring resonators, however, a heating device is needed to maintain a microring resonator at a desired temperature. The present disclosure provides a microring resonator heating device that includes at least two coaxially arranged contacts providing radial current flow to heat the microring resonator.

Abstract: An optical cavity is formed to have a circuitous configuration. The optical cavity is configured to receive light coupled from a waveguide. At least two photodetector sections are formed over respective portions of the optical cavity. Each of the at least two photodetector sections is configured to detect light present within the optical cavity. Each of the at least two photodetector sections is configured for separate and independent control.

Abstract: An optical cavity is formed to have a circuitous configuration. The optical cavity is configured to receive light coupled from a waveguide. At least two photodetector sections are formed over respective portions of the optical cavity. Each of the at least two photodetector sections is configured to detect light present within the optical cavity. Each of the at least two photodetector sections is configured for separate and independent control.