为了实现光的非互易性传输,在一维光子晶体中插入两个非对称的金属磁性材料缺陷层。插入的金属磁性材料在光子晶体中形成了不对称的磁性微腔。运用适用于磁光材料的传输矩阵方法研究结构的传输特性。由于金属磁性材料破坏时间反转对称,同时非对称微腔结构打破了空间反转对称,使得结构产生了非互易性的传输。随着入射角度的增大,非互易通道的间距也不断增加,并在50°时达到最大值,然后逐渐减小。当外加磁场增大时,非互易通道的间距也随之不断增大并且在某一特定值时达到最大值。最终的结果采用基于有限元法的电磁场仿真软件进行仿真验证。 In order to realize the non-reciprocal transmission of light, two asymmetric metal magnetic material defect layers are inserted in a one-dimensional photonic crystal. The inserted metal magnetic material forms an asymmetric magnetic microcavity in the photonic crystal. The transmission characteristics of the structure are studied by the transfer matrix method suitable for magneto-optical materials. Due to the reversal symmetry of the destruction time of the metal magnetic material, the asymmetric microcavity structure breaks the space inversion symmetry and makes the structure non-reciprocal transmission. As the angle of incidence increases, the spacing of nonreciprocal channels also increases, reaching a maximum at 50 ° and then decreasing. As the applied magnetic field increases, the spacing of nonreciprocal channels also increases and reaches a maximum at a certain value. The final result is verified by electromagnetic field simulation software based on finite element method.