Patent ID: 9052535
Filing Date: 2015-06-09
Classification: G02F

Abstract:
1. An apparatus comprising: a first semiconductive contact region having a first predominant carrier type; a second semiconductive contact region having a second predominant carrier type opposite to the first predominant carrier type; and an optical confinement structure that comprises two layers of the first predominant carrier type and one layer of the second predominant carrier type, wherein: the second-type layer is juxtaposed between the first-type layers and forms a p-n junction with each said first-type layer; and the first contact region contacts the first-type layers and the second contact region contacts the second-type layer such that in operation, a sufficient voltage applied across the contact regions and constituting a forward bias relative to said regions will create a forward bias across both said p-n junctions, and a sufficient voltage applied across the contact regions and constituting a reverse bias relative to said regions will create a reverse bias across both said p-n junctions.