CURVED OPTICAL WAVEGUIDE AND OPTICAL DEVICE

摘要

A curved optical waveguide comprising a core and a clad, characterized in that the core shape has no reversal of a curvature in the middle thereof, with curvatures at opposite ends thereof gradually approaching zero. A curved optical waveguide comprising a core and a clad, characterized in that the core shape has no reversal of a curvature in the middle thereof, with a curvature at one end thereof gradually approaching zero and a radius of curvature at other end being finite. An optical waveguide comprising such a curved optical waveguide and an optical waveguide having a separate core shape and disposed by being optically connected with the former, and an optical device using such a curved optical waveguide.