Abstract
The arrayed-waveguide grating consists of input/output waveguides, two focusing concave slab waveguide regions and a phase-array of multiple channel waveguides with the path length difference ΔL between the adjacent waveguides. The light beam from the input waveguide radiates to the slab waveguide and then couples into the arrayed channel waveguides. After travelling through the arrayed waveguides, the light converges to a focal point in the second slab region where the output waveguides are located.
© 1993 Optical Society of America
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