I am doing a Graphene nanohole array simulation. In this case I am just putting a layer of graphene which is 0.34nm thick over Al2O3 film in which holes are etched. I am just varying the periodicity of the hole from 200nm to 320nm in steps of 40nm. During our experiment we got a curve similar to this figure:. The whole experiment is done in the UV region. Now the problem is the graphene model provide by Lumerical does not have a fit in the UV region . So, I just used a sampled 3D model for Graphene and fitted the results I got from my Graphene Spectroscopy into Lumerical. I did a similar thing for Al2O3. The material file for both these is given here: Al2O3_UV_and_Graphene_UV.mdf (238.9 KB)
Now the main problem is if I run the simulation, the results are no way near the results I got from the experiment. The most puzzling thing is in the simulation, the dips are not getting shifted at all, which suggests that my simulation is not considering graphene. Can anyone please help me and check if I have done everything correctly or something I can do to fix this? I am new to Lumerical and don’t have much experience using it.
Here is the simulation file: sp_array_240nm.fsp (282.8 KB).