Complete Finite Element Technology for Optical Simulations
What is different?
There are many numerical methods to solve optical problems. Besides the Finite Element Method (FEM), these are
- Finite Difference Time Domain (FDTD) methods
- Finite Difference Frequency Domain (FDFD) methods
- Mode Matching methods
- Rigorous Coupled Wave Analysis (RCWA)
- Boundary Element methods (BEM)
- Beam Propagation Methods
- Method of Lines (MoL)
- Exact and easy treatment of complicated geometries
- Rigourous treatment of full Maxwell's equations
- Rigorous treatment of wave propagation on unbounded and possibly inhomogeneous domains availabe
- Rigorous treatment of optical sources from plane waves and Gaussian beams to point sources available
- Arbitrary high-order methods for fast convergence available
- Error control availabe
- Automatic adaptive mesh refinement available
and many more. Each method has its pros and cons. For each method applications are known, where these method is superior to the other ones.
Some of the following key features of the Finite Element Method belong also to some of the other methods, but there is no competing method which covers all of them:
The Finite Element Method provides a general, rigorous, versatile, and very fast method to the solution of challenging scientific and technological problems.