Photonics in highly dispersive media: the exact modal expansion.

  title={Photonics in highly dispersive media: the exact modal expansion.},
  author={Fr{\'e}d{\'e}ric Zolla and A. Nicolet and Guillaume Dem{\'e}sy},
  journal={Optics letters},
  volume={43 23},
We present exact modal expansions for photonic systems including highly dispersive media. The formulas, based on a simple version of the Keldyš theorem, are very general since both permeability and permittivity can be dispersive, anisotropic, and even possibly nonreciprocal. A simple dispersive test case where both plasmonic and geometrical resonances strongly interact exemplifies the numerical efficiency of our approach. 

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