Dear MPB users, I am trying to simulate the band diagram and modes of a PhC slab with a triangular lattice of air holes (similar to the one given in mpb examples). When I Increase the size of the supercell, the frequency of the guided modes remains the same, but the frequency of the modes that fall inside the light cone decreases. Does it mean I cannot get the extended modes in air and PhC using mpb? Is there any way of getting the modes from the light cone either with mpb or meep?
Thank you. Juan.
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