Optical wavelength conversion device
AssigneeSumitomo Electric Industries, Ltd.
InventorShigehiro Nagano
Life of this patent
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Abstract
An object is to provide, for example, an optical wavelength conversion device capable of highly efficient wavelength conversion on the surface of, or inside, the main body of any of various shapes, such as a bulky shape and a fiber shape. The optical wavelength conversion device includes a main body configured to allow light to propagate therein, and a plurality of crystal regions arranged inside the main body along a propagation direction of the light. The plurality of crystal regions each have a spontaneous polarization oriented along the propagation direction (i.e., spontaneous polarization having a polarization orientation coinciding with the propagation direction).
Claims9
An optical wavelength conversion device comprising:
- a main body made of an amorphous material and configured to allow light to propagate therein;
- and
- a plurality of crystal regions each made of a crystalline material and arranged inside the main body along a propagation direction of the light,
- wherein the plurality of crystal regions each include a first crystal sub-region having a spontaneous polarization radially oriented in a direction perpendicular to the propagation direction and second crystal sub-regions located at both ends of the first crystal sub-region in the propagation direction, the second crystal sub-regions having respective spontaneous polarizations oriented along the propagation direction.
Dependencies are inferred from the claim text.