Patent ID: 6895136
Filing Date: 2005-05-17
Classification: B82Y,G02B,G02F,H01L

Abstract:
1. A method for forming a hybrid active electronic and optical circuit using a lithography mask, the hybrid active electronic and optical circuit comprising an active electronic device and at least one active optical device, both devices disposed at least in part in a single Silicon-On-Insulator (SOI) wafer, the SOI wafer including an insulator layer and an upper silicon layer, the upper silicon layer including at least one component of the active electronic and at least one component of the active optical device, the active optical device also comprising a polysilicon region disposed above the upper silicon layer forming a polysilicon loaded region wherein the higher effective mode index of the polysilicon loaded region controls the confinement of the light propagating within the upper silicon layer, the method comprising projecting the lithography mask onto the SOI wafer in order to simultaneously pattern at least a portion of the active electronic device and at least a portion of the at least one active optical device.