Patent ID: 7512303
Filing Date: 2009-03-31
Classification: G02B,G02F

Abstract:
1. A wafer scale process for manufacturing optical ridge waveguide devices comprising the steps of: providing a transmissive wafer of optically transmissive material having a joining surface and an exterior surface; providing a carrier wafer having a joining surface and an exterior surface substantially parallel to the joining surface; creating one or more periodically poled regions on the joining surface of the transmissive wafer; creating one or more ridge waveguide structures aligned with the periodically poled regions on the joining surface of the transmissive wafer; applying a cladding layer having a uniform thickness on the joining surface of the transmissive wafer including the waveguide structures; and etching the cladding layer to create a relief pattern, the relief pattern comprising pedestals having uniform height equal to the thickness of the cladding layer without removing cladding from the waveguide structure; contacting the pedestals with the joining surface of the carrier wafer and introducing adhesive material into the spaces created by the relief pattern; polishing and thinning the transmissive wafer to a prescribed dimension; and dicing the assembled wafer structure into individual waveguide devices.