Welcome to the CAMFR home page.
CAMFR (CAvity Modelling FRamework) is a fast, flexible, friendly full-vectorial Maxwell solver. Its main focus is on applications
in the field of nanophotonics, like
- wavelength-scale microstructures (like photonic crystal devices)
- lasers (like vertical-cavity surface-emitting lasers)
- light-emitting diodes (like resonant-cavity LEDs)
It is based on a combination of eigenmode expansion and advanced boundary conditions like perfectly matched layers (PML).
CAMFR is an ongoing active research project, started at the
of the Department of Information
Technology (INTEC) at
Ghent University in Belgium. This means that it contains many attractive features and algorithms currently not yet found in commercial modelling tools. CAMFR can be used to calculate
This functionality is currently available for two types of geometries:
- the scattering matrix of a structure
- the field inside a structure, for any given excitation
- band diagrams of an infinite periodic structure
- threshold material gain and resonance wavelength of laser modes
- the response to a current source in an arbitrary cavity
- structures terminated by a semi-infinite repetition of another structure
- 2D Cartesian structures
- 3D cylindrical symmetric structures
Additionally, there is code to model the extraction from light emitting diodes, either planar devices, or 3D devices which incorporate 2D periodic structures.
Defining structures is quite straightforward, either layer-by-layer, or using geometric primitive
shapes. There are also integrated plotting routines for rapid simulation feedback.
CAMFR is conceived as a C++ framework, with all the algorithms implemented in terms of abstract waveguides and scatterers. This makes it extremely easy to extend CAMFR to new geometries.
The end user does not deal with this C++ code directly, but rather through bindings to the
Python scripting language. This makes the code very clear and flexible, and allows e.g. to seamlessly integrate CAMFR with Python-aware visualistion tools.
CAMFR is being distributed under a dual license scheme. All the code is released under the
GPL, but we also provide a closed proprietary
license scheme. Contact us for more information, including on support contracts.