I was wondering if there exist any good (accurate/fast/easy-to-use) open-source FEM solvers for 3D time-harmonic Maxwell's equations. I am looking to simulate systems a few wavelengths large in the X/Y dimensions and tens of wavelengths in the Z dimension, so relatively small-size problems. All my dielectrics are homogeneous and perfectly rectangular (boxes).I did some searching online and found various mature open-source FEM packages, but they do not seem to support Maxwell. Any suggestions would be much appreciated!
Open-source 3D FEM Solver for Electromagnetics (Time-Harmonic Maxwell)
finite element;electromagnetics;time harmonic;maxwell;open source
deal.II (see http://www.dealii.org/) does support Nedelec elements and, as a consequence, can solve the problems you're interested in. (Full disclaimer: I'm one of the principal developers of deal.II.)