SelectionCriterionΒΆ
| Type: | section |
|---|---|
| Appearance: | simple |
In this section selection criteria for the eigenvalues effective refractive index are set.
Mathematically, the propagating mode equation, see PropagatingMode has an infinite number of eigenvalues. However, not all correspond to a mode propagating in the 
-direction. There may exist purely damped modes as well as modes traveling in the 
direction. Hence, it is necessary to restrict the solver JCMsolve to compute only the modes of interest.