By following these recommendations, users can ensure that they have access to accurate and reliable simulations, technical support, and a legitimate license for Lumerical FDTD Solutions.
Many users encounter "errors -21" or "-25," which often indicate that the software version is incompatible with your current license [8].
With newfound hope, the team set to work on a revised version of the FDTD solver, one that sidestepped the patented component and still delivered unparalleled performance. The coding marathon that ensued was grueling, but the end result was well worth it.
In conclusion, while FDTD solutions can suffer from cracks, several fixes have been developed to mitigate these issues. By using higher-order schemes, stable boundary conditions, grid refinement, and filtering and smoothing techniques, accurate and reliable FDTD solutions can be obtained. As the field continues to evolve, we can expect to see further advances in FDTD solutions, enabling the simulation of increasingly complex electromagnetic problems.
