Patent ID: 6415071
Filing Date: 2002-07-02
Classification: G02B

Abstract:
An optical wavelength multiplexed transmission module featured in that a first slab waveguide is connected to the emitting side of one or more juxtaposed optical input waveguides, an arrayed waveguide consisting of a plurality of juxtaposed waveguides of differing wavelengths, which propagate light emitted from said first slab waveguide, is connected to the emitting side of said first slab waveguide, a second slab waveguide is connected to the emitting side of said arrayed waveguide, one or more juxtaposed optical output waveguides are connected to the emitting side of said second slab waveguide, a waveguide circuit of an arrayed waveguide optical wavelength synthesizing and dividing device is formed on a substrate, and an optical filter having a function of transmitting an optical signal in the wavelength band of a predetermined diffraction order and interrupting light of the optical signal in the wavelength band of a diffraction order other than the predetermined diffraction order is arranged on said optical input waveguide side of said arrayed waveguide optical wavelength synthesizing and dividing device, wherein said optical waveguide multiplexed transmission module is provided with a function of preventing light in said specified wavelength area of the diffraction order other than thee predetermined diffraction order through said arrayed waveguide optical wavelength synthesizing and dividing device.