The influence of linear and nonlinear asymmetric defects on light beam propagation in a one-dimensional photonic lattice has been numerically analysed. Defects are located in a uniform or composite lattice and can be linear or nonlinear in both cases. The results obtained for the uniform lattice were compared with those obtained for the composite lattice. The asymmetric defect width was varied. It was found that the width of asymmetric defects plays a significant role in light beam propagation. A comparison with the corresponding symmetric defects was also performed. Various types of strongly localized defect modes were found at the defect position as well as in the cavities between the asymmetric defects or an asymmetric defect and the interface. In addition to localized modes, we found reflection and transmission of light.

数值分析了线性和非线性不对称缺陷对一维光子晶格中光束传播的影响。缺陷位于均匀或复合的晶格中，在两种情况下都可以是线性或非线性的。将均匀晶格获得的结果与复合晶格获得的结果进行比较。不对称缺陷宽度是变化的。发现不对称缺陷的宽度在光束传播中起重要作用。还进行了与相应对称缺陷的比较。在缺陷位置以及非对称缺陷或非对称缺陷与界面之间的腔中发现了各种类型的强局部缺陷模式。除了局部模式，我们还发现了光的反射和透射。