Patent ID: 11892745
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 6:
7. 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:
a step of fabricating, in each of the plurality of slab waveguides, a grating structure in which an index of refraction periodically varies in a length direction of the waveguide;
a step of selecting a waveguide having a desired optical characteristic by successively measuring an optical characteristic of the plurality of waveguides while detecting reflected wave of a wavelength corresponding to a period of the grating structure; and
a step of optically coupling the selected waveguide and an optical fiber to each other based on the reflected wave from at least one slab waveguide that is adjacent to the selected waveguide on one side of the selected waveguide.