Generation of adaptive coordinates and their use in the Fourier Modal Method.

@article{Essig2010GenerationOA,
  title={Generation of adaptive coordinates and their use in the Fourier Modal Method.},
  author={Sabine Essig and Kurt Busch},
  journal={Optics express},
  year={2010},
  volume={18 22},
  pages={23258-74}
}
We present an improvement of the standard Fourier Modal Method (FMM) for the analysis of lamellar gratings that is based on the use of automatically generated adaptive coordinates for arbitrarily shaped material profiles in the lateral plane of periodicity. This allows for an accurate resolution of small geometric features and/or large material contrasts within the unit. For dielectric gratings, we obtain considerable convergence accelerations. Similarly, for metallic gratings, our approach… CONTINUE READING
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