Patent ID: 6069990
Filing Date: 2000-05-30
Classification: G02B

Abstract:
An optical wavelength multiplexer/demultiplexer, comprising: a substrate; and, provided thereon, input waveguides for inputting a wavelength-division multiplexed optical signal, a plurality of output waveguides for demultiplexing and outputting the wavelength-division multiplexed optical signal output from the input waveguides, an array waveguide comprising a plurality of waveguides with a predetermined difference in length being provided between the waveguides, an input slab waveguide for connecting the input waveguides to the array waveguide, and an output slab waveguide for connecting the output waveguides to the array waveguide,the input waveguides being connected to the input slab waveguide through tapered waveguides provided on the input waveguide side and parabolic waveguides provided on the input slab waveguide side.