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采用平面波展开的方法计算了正方格子二维磁性光子晶体(MPC)的光子带隙结构.散射子的形状分别为长方形,正方形,六角形和圆形.通过调节磁导率,填充率和散射子的旋转角度,找到了MPC各种结构的最大的绝对带隙宽高比ωR.研究发现随着磁导率的增加,MPC绝对带隙中心频率ωg单调减小,绝对带隙宽度Δω和其宽高比ωR可能不同时达到最大值.而随着填充率或者散射子旋转角的增加,基本不改变ωg的大小,各种结构的Δω和ωR同时达到最大值.
The photonic bandgap structure of two-dimensional square photonic crystal (MPC) was calculated by using the plane wave expansion method.The shape of the scatterers was rectangular, square, hexagonal and circular respectively. By adjusting the permeability, The maximum absolute bandgap ratio ωR of various structures of MPC was found.It is found that the absolute bandgap center frequency ωg of MPC decreases monotonically with the increase of permeability and the absolute bandgap width Δω and its width The maximum ratio ωR may not reach the maximum at the same time, while the filling rate or scattering sub-rotation angle increases basically does not change the size of ωg, the various structures of Δω and ωR reach the maximum at the same time.