二维fdtd程序，pml吸收边界条件，tm波入射-2D fdtd procedures, PML absorbing boundary conditions, the TM-wave incident

此程序用PML设置吸收边界条件实现2维TM波FDTD仿真-this program set up with PML absorbing boundary conditions for the attainment of two-dimensional wave TM FDTD simulation

二维的FDTD程序，采用pml的匹配层，实现的效果比较理想，适合初学者(Two-dimensional FDTD program, using the matching layer of PML, the realization of the effect is ideal, suitable for beginners)