Numerical methods and modelling techniques are gaining importance in the design of optical systems. We are particularly interested in the modelling of fiber, integrated optical components and miniaturised optical components.
Wave-Optical Simulations (Synopsys - RSoft Photonic Design Software)
The RSoft Component Design Suite of Synopsys is a widely used simulation tool for designing photonic's components. In the course of a CTI-project (Commission for Technology and Innovation) the following tools have been acquired:
- Grating MOD
BeamPROP is used for the modelling of single-mode waveguides or fibers. There are two methods available. The mode-solver allows to calculate the energy distribution along the waveguides cross section. The beam propagation method on the other hand can model the field distribution across the desired component. BeamPROP can solve 2D as well as 3D problem.
FullWAVE is based on the "Finite-Difference Time-Domain" method (FDTD) opens up a broad range of applications. The FDTD is even able to model the feedback of electromagnetic waves by solving the Maxwell equations. This is of particular interest in the field of surface plasmons and biophotonics.
DiffractMOD is based on the "Rigorous Coupled Wave Analysis" method (RCWA). It is of particular interest for diffractive structures like diffractive optical elements (DOEs) and waveguide resonators.
GratingMOD is based on the "Coupled Mode Theory" (CMT). It is mainly used to calculate and analyse Bragg gratings. Furthermore it is suitable for "long-period" gratings and the design of optical amplifiers.
FemSIM is used for the calculation of waveguide and resonator modes of any structures. It is based on the Finite Element Method (FEM).