A light-emitting device is provided. The light-emitting device can include a main cavity formed within an epitaxial structure that is configured to generate light in response to having an electrical current provided thereto. The light-emitting device can also include a plurality of feedback cavities also formed within the epitaxial structure, where each of the plurality of feedback cavities are transversely-coupled with the main cavity to receive light from the main cavity and reflect at least some feedback light back into the main cavity. The light-emitting device may provide enhanced modulation bandwidth or ultra-high speed communication capabilities.