What seems to be a solution is to set the PML strength to be very low 
and compensate that with the PML thickness

avner

avner yanai wrote:
> I would like to calculate the ratio of the flux and energy density of an 
> SPP mode (with regard to a cross section).
> I think there is a problem to do that as it is impossible to terminate 
> the waveguide with the PML (the PML tends to blow fields up when it is 
> contact with a metal, and if I terminate the waveguide before the PML, I 
> will suffer from back reflections that will obviously distort the results).


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