UM 4
4. Notes, tips, trouble shooting, known bugs:
4.1 FIBRE
• Computer slows down and becomes unusable when FIBRE is used. By default, FIBRE is run with normal priority. Since fibre is computationally demanding, this results in a slowdown for other applications. To avoid this, you can start the simulation using
start /low fibre
- or
start /belownormal fibre
- This will run FIBRE with a lower priority. Alternatively, you can redefine the priority using the Windows Task Manager.
• FIBRE causes a numerical error, but the effective index region does not overlap any of the structure’s refractive indices. Check that there are no ’fictious’ inclusions, ie inclusions with same refractive index as the surrounding matrix.
4.2 WINFIELD
• In a viewport symmetric around the origin, if the resolution is set to an odd number of points, the central pixel will correspond to the origin of the plane, for which some components of some fields may be undefined in the analytic internal representation of the fields used by WINFIELD . This results in a black pixel at the centre of the picture. To avoid this, set resolution to an even number, or slightly shift the viewport.
• If you try to load a .bcf associated with a structure file which defines a symmetry different from the symmetry used in the .bcf file, WINFIELD will stop.
