Patent ID: 6563986
Filing Date: 2003-05-13
Classification: G02B

Abstract:
An arrayed waveguide grating in which a waveguide-formed area having a waveguide is formed on a substrate, wherein the waveguide comprising:one or more optical input waveguides arranged side by side; a first slab waveguide connected to the output end of said optical input waveguides; an arrayed waveguide including a plurality of channel waveguides arranged side by side, each having a length different from each other by a set amount, that are connected to the output end of said first slab waveguide and propagate light introduced from the corresponding first slab waveguide; a second slab waveguide connected to the output end of said arrayed waveguide; a plurality of optical output waveguides arranged side by side connected to the output end of said second slab waveguide; wherein the focal length of said first slab waveguide and that of the second slab waveguide are established to become different from each other; a continuous separation plane is formed so as to intersect with both the light channel of the first slab waveguide and the light channel of the second slab waveguide; said waveguide-formed area is divided into the first waveguide-formed area including said optical input waveguides and said optical output waveguides, and the second waveguide-formed area including said arrayed waveguide by said separation plane; and a slide movement mechanism is provided, which causes at least one of the second waveguide-formed area and the first waveguide-formed area to slide and move along said separation plane.