Patent ID: 8021900
Filing Date: 2011-09-20
Classification: G02B

Abstract:
1. A method for producing an integrated optical waveguide with a patterned upper cladding comprising the steps of: a) depositing a core layer onto a substrate; b) patterning the core layer to provide a light transmissive element wholly on the substrate, wherein the light transmissive element comprises a waveguide and lens; c) depositing an upper cladding layer onto the light transmissive element, wherein the upper cladding layer comprises a radiation-curable polymeric material; and d) patterning the upper cladding layer by selective exposure to curing radiation to provide at least one region in which the light transmissive element is air clad, wherein the upper cladding patterning process does not further pattern the waveguide or lens, and the lens has an air clad curved surface.