The most comprehensive overview of the scientific principles behind CAMFR can be found in the PhD thesis of Peter Bienstman:
"Rigorous and efficient modelling of wavelength scale photonic components", which can be downloaded as a 9MB
There have also been a number of publications in scientific journals or in the proceedings of international conferences, either on CAMFR itself, or on simulation results obtained with
CAMFR. For some of these publications, we provide electronic versions, but
this material is only for rapid dissemination of scientific results and for personal use. Copyright of these papers rests with the publishers.
For a sample of these publications, see this page
on the Photonics@INTEC website.