| 摘要 |
A square crystal lattice photonic crystal based on a high refractive index hollow column with a round inner surface and a square outer surface. The cell of the photonic crystal is composed of a high refractive index hollow column with a round inner surface and a square outer surface and a low refractive index background medium. The photonic crystal structure is formed by arranging the high refractive index hollow columns and medium square columns with round inner surfaces and square outer surfaces in a low refractive index medium background according to a square crystal lattice. The lattice constant of the photonic crystal square crystal lattice is a. The side length of the outer square of the hollow column is 0.74013a, the rotation angle of the medium column is 27.264, the radius of the inner round hole is 0.3119a, and the corresponding relative value of the maximum absolute forbidden band is 18.184%. The photonic crystal belongs to a square crystal lattice, so that the connection and coupling between different optical elements in an optical path and between different optical paths can be realized easily, and the reduction of the cost is facilitated. The photonic crystal structure has a very large absolute forbidden band, and can be widely applied to the design of the large-scale integrated optical path. |
