An active photonic device having a Darlington configuration is disclosed. The active photonic device has a collector layer over a substrate, a base layer over the collector layer, and an emitter layer over the base layer. A connector structure electrically couples an inner emitter region with an outer base region, wherein the collector layer, base layer, the emitter layer and the connector structure are substantially centered within a first region over the substrate. A feedback resistor is coupled between an inner collector region and an inner base region. At least a portion of the feedback resistor is arc-shaped and resides over a first arcuate path defined by a substantially constant first radius centered in the first region.