由修正后的传输矩阵理论研究了由单负材料构成的一维光子晶体的带隙特性。发现了此结构的光子晶体中同时存在着全方位带隙和布拉格带隙,且发现A、B层厚度等比例变化时全方位带隙非常稳定;当引入缺陷时,全方位带隙里的缺陷态将随入射角度、A层和B层同比例缩放的变化相对稳定,而布拉格带隙里的缺陷态在频谱域内变化很大。 The bandgap characteristics of one-dimensional photonic crystals composed of single-negative materials are studied from the modified transfer matrix theory. It is found that the photonic crystal of this structure has both the full bandgap and the Bragg bandgap, and the full band gap is found to be very stable when the ratio of the thickness of the A and B layers is changed. When the defect is introduced, the defect in the full bandgap The state will be relatively stable with the scaling of layers A and B with respect to the incident angle, whereas the defect states in the Bragg band gap vary widely in the spectral domain.