On Mar 18, 2008, at 2:37 PM, shi lina wrote: > "An Ey source at the origin has even mirror symmetry in x and > odd > mirror symmetry in y. So, since your structure is also mirror- > symmetric in x and y, you would exploit this as: > > (set! symmetries (list (make mirror-sym (direction X)) (make mirror- > sym (direction Y) (phase -1))))" > > So if I calculate the transmission and the source locates above the > photonic crystal slab (not at the origin), I can't use mirror > symmetry?
As long as your source(s) has mirror symmetry, you are okay. For example, if have a single point source in the Y direction at (0,0,z) for any z, then it still has the X and Y symmetries noted above. Regards, Steven G. Johnson _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
