Hi Prof.Johnson:

I wanna simulate a photonic crystall waveguide which has a TM gap.As
the example "tunneling drop" in your website,The TM mode travels well
in the line defect of PC.
But I don't know how to define a TM mode.Instead,I wrote:

(set! sources (list
       (make source
             (src (make continuous-src
                                     (wavelength 4)))
                                             (component Ez)
                                                               (center
9 0) (size 0 2))))

in order to simulate a TM source in the line defect in your
example.But it dosn't work,instead It is plane wave running
everywhere.

Could you kindly tell me how to simulate a TM mode in the line defect
as in your "tunneling Drop" example?

Thank you.

Regards
Harvey

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