loss rate calculation is off about legume HOT 3 CLOSED

Update: I think it's probably related to the cladding being not air. If I delete these two lines:

phc.add_layer(d=0.375, eps_b=3.5032**2)  # sch layer
phc.add_layer(d=0.495, eps_b=3.3955**2)  # active layer

I am left with a one layer structure, with claddings being not air. The calculated loss rate is still off.

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So the code above doesn't run at all, because currently loss rates are only implemented for even gmode_inds. So I can't really reproduce what you're seeing.

Maybe when I'm done with the loss rates fully, we can have a look into that again.

P. S. Note that I've never tried GME with such a small contrast between slab and claddings, but I hope that it will still work well - we'll see.

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Fixed in afc9bc0

The Q of the band starting around f = 0.3 is now > 10^5.

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