Patent ID: 6404948
Filing Date: 2002-06-11
Classification: G02B,H04J

Abstract:
An optical device comprising:an arrayed waveguide grating (AWG) having an input and a plurality of outputs, said input being configured to be coupled to an optical communication path carrying a plurality of first optical channels, each at a respective wavelength, said arrayed waveguide grating supplying a respective one of a plurality of second optical channels selected from said plurality of first optical channels, and undesired optical signals at each of said plurality of outputs; and a plurality of filtering elements each having an input port coupled to a respective one of said plurality of outputs of said arrayed waveguide grating and an output port decoupled from the input of said arrayed waveguide grating, each of said plurality of filtering elements supplying said respective one of said plurality of second optical channels at said output port while reducing said undesired optical signals.