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AssigneeNippon Telegraph and Telephone Corporation
InventorsTakushi Kazama, Takahiro Kashiwazaki, Osamu Tadanaga, Koji Embutsu, Ryoichi Kasahara, Takeshi Umeki
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With a wavelength conversion device based on a nonlinear optical effect, when arrayed waveguides including an intended nonlinear waveguide are fabricated, unwanted slab waveguides are inevitably formed. The slab waveguides can cause an erroneous measurement in the selection of a waveguide having desired characteristics from the arrayed waveguides. The erroneous measurement can lead to redoing steps for fabricating the wavelength conversion device and a decrease in the yield and inhibit the evaluation of the characteristics in selection of the waveguide and the subsequent fabrication of the wavelength conversion device from being efficiently performed. A wavelength conversion device according to the present invention includes a plurality of waveguides formed on a substrate, and a plurality of slab waveguides that are arranged substantially in parallel with and spaced apart from the plurality of waveguides, and each of the slab waveguides has a grating structure that reflects light of a particular wavelength.
A wavelength conversion device, comprising:
A method of fabricating a wavelength conversion device, the wavelength conversion device including a plurality of waveguides formed on a substrate of a nonlinear material and a plurality of slab waveguides that are arranged substantially in parallel with and spaced apart from the plurality of waveguides, the method comprising:
Dependencies are inferred from the claim text.