Patent ID: 6816651
Filing Date: 2004-11-09
Classification: G02B

Abstract:
An arrayed waveguide grating optical multiplexer/demultiplexer comprising:at least one first optical waveguide; a first slab waveguide; an arrayed waveguide connected to said at least one first optical waveguide via said first slab waveguide, said arrayed waveguide comprising a plurality of channel waveguides each of which has a different length; a second slab waveguide; and a plurality of second optical waveguides connected to said arrayed waveguide via said second slab waveguide, wherein the optical multiplexer/demultiplexer is configured to multiplex a plurality of lights having different wavelengths with a designed wavelength spacing and to demultiplex a light into a plurality of lights having different wavelengths with said designed wavelength spacing, said designed wavelength spacing being determined such that a value which is obtained by multiplying said designed wavelength spacing by an integer which is at least two is substantially equal to an actual wavelength spacing of lights which are input to or output from the multiplexer/demultiplexer.