采用fdtd方法，分别计算平面波照射到1维层介质的反射与透射以及在理想介质中的传播，场源可为高斯源或者正弦源，可以直观理解趋肤深度和边界概念-By fdtd method, were calculated to 1-dimensional plane wave radiation reflection and transmission media layer and spread in an ideal medium, the field for the Gaussian source or sources can be sinusoidal source, you can intuitively understand the concept of skin depth and the boundary