PML boundary condition does not show TM modes

    • mborhan.mia

      Hi there,

      I am trying to simulate a waveguide structure, when I used metal boundary conditions I have both TE and TM modes. But when I switched to PML there is no TM mode. I used a different n (instead of use max index) but did not see any TM modes. What possibly could be the reasons for this?


    • Guanhui Wang
      Ansys Employee
      Hi mborhanmia
      For an initial test, you may want to increase the number of trial modes to see whether that can help.
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