ACTIVE PHOTONIC DEVICE HAVING A DARLINGTON CONFIGURATION WITH FEEDBACK

摘要

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.

主权项

1. An active photonic device having a Darlington configuration comprising:
a substrate; a collector layer over the substrate and comprising:
an inner collector region; andan outer collector region that substantially surrounds the inner collector region; a base layer over the collector layer comprising:
an inner base region; andan outer base region that substantially surrounds and is spaced apart from the inner base region; an emitter layer over the base layer and comprising:
an inner emitter region that is ring-shaped and resides over and extends substantially around an outer periphery of the inner base region; andan outer emitter region that is ring-shaped and resides over and extends substantially around the outer base region; a connector structure that electrically couples the inner emitter region with the 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; and a feedback resistor coupled between the outer collector region and the inner base region and formed over the substrate and outside of the first region.