Optical waveguide structure capable of regulating and controlling boundary state of topological photonic crystal

The invention provides an optical waveguide structure capable of regulating and controlling the boundary state of a topological photonic crystal. The optical waveguide structure comprises an upper metal plate, a lower metal plate, a waveguide, a background material and a shell, wherein the upper metal plate and the lower metal plate are arranged in the shell, the waveguide is arranged between theupper metal plate and the lower metal plate, the waveguide is composed of a part A and a part B, the part A is formed by arranging unit cells with moderate topological properties, the part B is formedby arranging unit cells with non-moderate topological properties, each unit cell is formed by arranging six cylindrical dielectric cylinders with the radius of 0.12a, the cross section of each unit cell is in a regular hexagon shape, the distance radius from the center of each unit cell to the corresponding cylindrical dielectric cylinder in the unit cell is R, the distance between the centers ofevery two adjacent unit ce