Dear all,
probably I'm missing something about the use of the Electromagnetic Waves, Beam Envelopes; as I understand well, this module can be used to simulate a long waveguide (some mm or cm long) but without requiring a mesh size smaller than the signal wavelength. I have prepared a simple example of a waveguide that starts with a small width and ends with a bigger width (some kind of taper waveguide); the wave envelope change in this case should be minimal, so I'm expecting that a coarse mesh along the beam propagation direction is enough to describe the wave behaviour; unfortunately this is not the case, and I have to reduce the mesh size to a fraction of wavelength to see the results, as in the typical beam propagation methods.
Any suggestion? Thanks in advance
P.S. The file has the mesh and solutions stripped out in order to reduce the size of the file to the minimum.
probably I'm missing something about the use of the Electromagnetic Waves, Beam Envelopes; as I understand well, this module can be used to simulate a long waveguide (some mm or cm long) but without requiring a mesh size smaller than the signal wavelength. I have prepared a simple example of a waveguide that starts with a small width and ends with a bigger width (some kind of taper waveguide); the wave envelope change in this case should be minimal, so I'm expecting that a coarse mesh along the beam propagation direction is enough to describe the wave behaviour; unfortunately this is not the case, and I have to reduce the mesh size to a fraction of wavelength to see the results, as in the typical beam propagation methods.
Any suggestion? Thanks in advance
P.S. The file has the mesh and solutions stripped out in order to reduce the size of the file to the minimum.