Metamaterial example


#1

Dear lumerical team,
I am studying the metamaterial example from the kb
https://kb.lumerical.com/en/metamaterials_thz_chen.html
from the above page we can see the results of the structure such as transmission and reflection of the structure. Here I have one query why the transmission value is not going upto “1”. at 0.2 THz it is 0.7 transmission but in the paper it is closely to 1 see the atachedd figure.

which point is effecting this transmission?.
kindly let me your comments
with many many thanks


#2

Dear @Nanda

One thing to note is that we use a dielectric with constant refractive index of 3.5 for the substrate. This behaviour will be different than the substrate material used in the experiment (n-GaAs and SI-GaAs). I expect that with a more sophisticated material model results will be similar.

Thanks


#3

Dear bkhanaliloo,
thank you for your reply,
I checked according to your comment yes it is changed with substrate,

many many thanks