Comparison and evaluation of boundary conditions in an FDTD-1D Simulation

The FDTD is derived by discretizing Maxwell's equation using the fi-nite difference (FD) method, it is commonly used in solving differential equations . One fundamental challenge faced during implementing FDTD method is the application of boundary conditions, it can be employed to enhance the perfor-mance of the simulation. To evaluate the effectiveness of different boundary con-ditions, a one-dimensional FDTD simulation is carried out in this work. The im-pact of various boundary conditions such as PEC, PMC, 1st order Mur Bounda-ry and PML and CPML, on the plane wave propagation along the z axis are explored. The choice of each boundary depends on the specific problem being solved