Condition and Property of Negative Refraction Phenomenon in Two-Dimension Photonic Crystal
二维光子晶体负折射现象条件及特性研究

The negative refraction phenomenon in two-dimension (2D) photonic crystals (PCs) is investigated with the band structure calculation and equal frequency surface (EFS) of PCs. The frequency range of negative refraction phenomenon is analyzed.The finite-difference time domain method(FDTD) is used to simulate the propagation of light at the interface and inside of the photonic crystals. It is shows that the negative refraction phenomenon in two-dimension photonic crystals is real observed in the specifical frequency range. The negative refraction phenomenon in the different medium materials and different crystal lattice structures in different frequencies is compared.A new spectroscope of hexagonal 2D triangular array photonic crystal is designed.