Corpus ID: 237513629

Non-reciprocal wave propagation in space-time modulated media

  title={Non-reciprocal wave propagation in space-time modulated media},
  author={Habib M. Ammari and Jinghao Cao and Erik Orvehed Hiltunen},
We prove the possibility of achieving non-reciprocal wave propagation in space-time modulated media and give an asymptotic analysis of the non-reciprocity property in terms of the amplitude of the time-modulation. Such modulation causes a folding of the band structure of the material, which may induce degenerate points. By breaking time-reversal symmetry, we show that these degeneracies may open into non-symmetric, unidirectional band gaps. Finally, we illustrate our results by several… Expand

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