| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor optical filter which can inclinedly change a refraction index in a direction perpendicular to a traveling direction of a light wave in a region of an input slab waveguide, and has the function of varying a wavelength capable of being output from each port of an output waveguide.SOLUTION: A semiconductor optical filter includes a substrate containing a semiconductor as material, an input optical waveguide, an input slab waveguide, an array waveguide, an output slab waveguide, and an output optical waveguide. The input slab waveguide is made so that the central axis of the input slab waveguide in a traveling direction of the light wave coincides with [001] axis of semiconductor crystal, and includes a voltage application electrode for applying an electric field to the input slab waveguide in a crystal growth axis [100] direction. |
