Meshing in Comsol

  • Thread starter haver
  • Start date
Hello everyone!
I am simulating a distributed Bragg grating filter using comsol. The mesh i used is like wavelength/index/8, but i do not get symmetric spectrum to Bragg wavelength.Layers are λ/4 width. Is there a special meshing for these Bragg layers? Or is there someone who can give me suggestion?
Thank you.
 
You probably need to mesh smaller.

One trick: if you have a particular section of a system that has a large difference in critical physical dimensions within a larger piece of material, you can define a faux structure around that critical section (of the same material) and tell Comsol to mesh that volume smaller but then use a larger mesh for the larger dimensioned pieces. This can have a radical improvement on both accuracy and simulation time.
 

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