Band calculations for TE mode of a photonic crystal (2D model)

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Similar issue to the post above except I've been modelling a 2D photonic crystal. My aim is to reproduce the dispersion relation for the TE mode from Chapter 5 Figure 2 in the Joannopoulos' Photonic Crystals book.

I was able to sucessfully reproduce the TM mode relation, but when I changed the electromagnetic wave solver to solve for the in-plane field component I'm unable to produce the desired result.

Any suggestions for troubleshooting would be appreciated. Thanks!



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