Patent ID: 9618694
Date: 2017-04-11
CPC Classifications: G02B

Claim:
1. An arrayed waveguide grating comprising: two or more first input/output waveguides; a first slab waveguide connected to an end of the first input/output waveguides; an arrayed waveguide connected to an end of the first slab waveguide on an opposite side of the first input/output waveguides; a second slab waveguide connected to a first end of the arrayed waveguide on an opposite side of the first slab waveguide; one or more second input/output waveguide(s) connected to an end of the second slab waveguide on an opposite side of the arrayed waveguide; and a grating formed in the first slab waveguide at a distance from the end of the first slab waveguide, and wherein a second end of the arrayed waveguide is connected to a position deviated from a position where a constructive interference portion of a self-image of the grating is formed so that a light intensity distribution from the first input/output waveguides is substantially uniform when light enters from the one or more second input/output waveguide(s) toward the first input/output waveguides.