中文摘要：

为了实现光的非互易效应,本文设计了四种周期性结构的一维光子晶体,利用基于旋磁材料的传输矩阵公式,计算结构的传输谱。通过外加磁场的作用,破坏系统的时间反演对称。研究发现时间反演对称的破缺必须结合空间结构对称的破缺,才可实现单向传输,并且这种对称性破坏的越严重,正反方向透射谱的分离度越高。旋磁材料作为一维光子晶体缺陷层,不仅结构简单,而且正向透射率接近100%。在入射角为45°时,正反方向透射消光比在缺陷层厚度为400μm时达到最大值0.98。

英文摘要：

In order to achieve the nonreciprocal effect of light,four kinds of one-dimensional periodic structure were design. The transmission spectrum was calculated by means of transfer matrix method with gyromagnetic material. The time reversal symmetry is broken by the effect of external magnetic field. The study results show that to achieve unidirectional transmission time reversal symmetry breaking must be combined with spatial inversion symmetry breaking,and the more serious the symmetry breaking,the bigger interval between the transmission peaks corresponding to the forward and backward directions. The one-dimensional photonic crystal with gyromagnetic material defect has not only a simple structure but also the forward transmittance close to 100%. The extinction ratio of forward and backward transmission at incident angle of 45° reaches the maximum value 0. 98 at about 400 μm.