SEMICONDUCTOR OPTICAL WAVEGUIDE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor optical waveguide device for reducing reflection return light at an optical connection part between a semiconductor optical waveguide and an optical function element by a simplified structure.SOLUTION: A non-reflection diffraction grating, having a cycle for eliminating reflection to a side where waveguide light is guided, is disposed at a side of a connection part between a semiconductor optical waveguide and an optical function element.