Learning Forum

[chenxi.ma]

Dear Ansys staff,

I'm trying to simulate the scattering cross-section of a gold plasmonic structure sitting on silicon. I used the tsfs source and made sure that the plasmonic structure, tsfs source, scat analysis group, and mesh override for the tsfs source are separated at least 2 cells away from each other. I made sure that the simulations were identical, except for the source wavelength range and the corresponding monitor frequency points. However, the results are different for different wavelength ranges.

Could you please kindly help me address the possible reasons?

Thank you very much in advance.

[Guilin Sun]

Yes, this is normal, since when the wavelength changes, the material fitting changes and thus it affects the refractive index used, and possibly the mesh size (the automesh background).

Please refer to this post: 

Ansys Insight: 光谱宽度会影响同波长的透过率吗？分段仿真如何得到光滑的结果