利用传输矩阵方法研究了含负折射率缺陷的一维光子晶体的透射谱.以19个周期的1/4波堆存在3个负折射率缺陷的光子晶体为例进行了数值计算.结果表明:如果改变缺陷的折射率,缺陷模之间的耦合作用将发生改变,带隙中形成的杂质带也随之改变; 当这个折射率取适当值时,在禁带中出现多个尖锐的透射峰,与正折射率缺陷构成的杂质带不同.

The transmission through one-dimensional photonic crystal with negative refractive index defects was studied by using transfer matrix method.Quarter-wave stack photonic crystal of 19 periods with three negative refractive index defects were taken as an example for numerical calculation.It is found that when the refractive index of defect was changed,the coupling effect between the defect modes was varied,which results in the change of the impurity band.Some sharp transmission peaks apper in the forbidden band when the refractive index of defects is appropriate.It is different from the the impurity band formed by positive refractive index defects.