Hello Lumerical Community,
I had a question about how best to refine the mesh region within the software with respect to simulating a resonance cavity between four metal (silver) plates. A rough overview of the orientation of the plates is shown below where each vertical dash mark represents a single silver plate:
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I am wondering why, when I adjust the number of mesh cells, the resonant frequency of the cavity shifts. I have the mesh refinement option set to ‘conformal variant 1’ since my simulation involves metals and have the boundary conditions set to ‘PML’, but I don’t understand why a change in number of mesh cells would change the resonance of the cavity. I am unsure if the accuracy of my results is dependent on a specific number of mesh cells, if I have chosen the wrong mesh refinement option, or if I even need to utilize mesh refinement.
I have been using an electric dipole source in the TE polarization mode for my simulations. My goal has been to range the emission wavelength of the dipole and observe the wavelength corresponding to the greatest magnitude of electric field and power within the cavity in order to determine the resonant frequency of said cavity. Once I have determined the cavity’s resonance, I will then move the dipole outside of the cavity at various distances and monitor the power transmitted through one opening of the cavity out through the other. I am simulating with a light source at a wavelength of approximately 31 mm.
Any help would be greatly appreciated!