Patent ID: 6463188
Filing Date: 2002-10-08
Classification: G02B

Abstract:
An optical integrated circuit device having a Y-branch structure through which light signal input through an input waveguide is branched and transmitted into two output waveguides, with said Y-branch structure having;an input surface with a waveguide width a equal to the width of said input waveguide, which is connected flush to said input waveguide; and an output surface with a waveguide width W (>2a+g) is larger than a width 2a+g achieved by adding a gap g width of the gap between said output waveguides to a width 2a equal to the total of the widths of said two output waveguides each having a waveguide width a equal to the width of said input waveguide, which is connected to said two output waveguides via a stage.