problem in using PML in FDTD matlab and c codes

i made FDTD program using matlab and C langs
i use PML and it gives me un symmertic fields i.e un equal reflections
can any one help me in correcting this problem

what kind of PML do you use? is it 2D or 3D? can you describe your pml in more detail?

tenderne

iam using split field 3D berenger PML in which, each field is splitted in two component
also i am using exponential parameters not oridnary ones

Hi,
as tenderne asked is it 2D or 3D? Because if you are using 3D code and you use 2 splitted field for your pml you are likely to get faulty results. Why not try uniaxial PML instead, with that you don't have to worry about split fields and it will give you a result that is better than the splitted field PML method.