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An optical waveguide element has plural spherical bodies arranged in straight or curve with diameters of not more than 100 μm made of transparent uniform glass. The optical waveguide element may have plural spherical bodies arranged in straight or curve as are viewed from their ends with diameters o

An optical waveguide element has plural spherical bodies arranged in straight or curve with diameters of not more than 100 μm made of transparent uniform glass. The optical waveguide element may have plural spherical bodies arranged in straight or curve as are viewed from their ends with diameters of not more than 100 μm made of transparent uniform glass.

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1. An optical waveguide element comprising arranged plural spherical bodies with diameters of not more than 100 μm made of transparent uniform glass, the plural spherical bodies arranged such that a light is guided serially through more than one of said spherical bodies. 2. An optical waveguide elem

1. An optical waveguide element comprising arranged plural spherical bodies with diameters of not more than 100 μm made of transparent uniform glass, the plural spherical bodies arranged such that a light is guided serially through more than one of said spherical bodies. 2. An optical waveguide element as defined in claim 1, wherein each of the plural spherical bodies have a diameter of 1-100 μm. 3. An optical waveguide element as defined in claim 1, wherein the plural spherical bodies are arranged in straight. 4. An optical waveguide element as defined in claim 3, wherein the plural spherical bodies constitute one unit, and plural units are stacked in a direction perpendicular to the arrangement direction of the plural spherical bodies constituting the one unit. 5. An optical waveguide element as defined in claim 1, wherein the plural spherical bodies are arranged in curve. 6. An optical waveguide element as defined in claim 5, wherein the plural spherical bodies constitute one unit, and plural units are stacked in a direction perpendicular to the arrangement direction of the plural spherical bodies constituting the one unit. 7. A three-dimensional optical waveguide circuit comprising an optical waveguide element as defined in claim 1 and a thin film optical waveguide element crossing with the optical waveguide element three-dimensionally. 8. An optical system comprising an optical waveguide element as defined in claim 1 and an external optical system.