Patent ID: 7438838
Filing Date: 2008-10-21
Classification: G02B,G03F

Abstract:
1. A method for producing a polymeric optical waveguide-forming master plate, comprising: laying a thread which does not transmit rays used for subsequent exposure on a substrate for a master plate, applying a positive resist material onto the substrate for the master plate to have a thickness such that, when parallel rays are vertically radiated onto the positive resist material from a side opposite to a substrate side with respect to the thread and then the positive resist material is developed, a layer made of the positive resist material is formed at whole space where the rays have not been radiated; radiating parallel rays substantially vertically to the substrate for the master plate to expose the positive resist material to the rays; and developing the exposed positive resist material on the substrate for the master plate to form a convex portion corresponding to a shape of an optical waveguide core.