Patent ID: 6913705
Filing Date: 2005-07-05
Classification: G02B,Y10S

Abstract:
1. A manufacturing method for an optical integrated circuit having a spatial reflection type structure such that light incident or reflected on a substantially perpendicular end surface of an optical waveguide layer formed on a substrate is reflected on an inclined surface opposed to said end surface, said manufacturing method comprising the steps of: applying a first photoresist to an upper surface of said optical waveguide layer; removing said first photoresist except a portion corresponding to said inclined surface; heating said first photoresist to a given temperature to melt said first photoresist at least partially and deform said first photoresist by surface tension, thereby forming a first mask having an inclined shape; applying a second photoresist to the upper surfaces of said optical waveguide layer and said first mask; removing said second photoresist at a portion ranging from a position corresponding to said end surface to a position corresponding to the upper end of said inclined surface to form a second mask; and etching said first mask, said second mask, and said optical waveguide layer by reactive ion etching to thereby simultaneously form said end surface and said inclined surface.