Transversal Mode Orthogonality in SAW waveguides with transversally varying slowness anisotropy within the scalar field approximation

@article{Mayer2011TransversalMO,
  title={Transversal Mode Orthogonality in SAW waveguides with transversally varying slowness anisotropy within the scalar field approximation},
  author={Markus Mayer and Ulrike Rosler and Thomas Ebner and Karl W. Wagner and Ken-ya Hashimoto},
  journal={2011 IEEE International Ultrasonics Symposium},
  year={2011},
  pages={337-340}
}
Within the 2D P-matrix model the scalar feld is identified with a power wave. As has been demonstrated recently, orthogonality of the transversal modes implies power conservation in the 2D P-matrix model [1]. Assuming continuity of the transversal mode profile and its derivative, however, orthogonality is only obtained if the slowness anisotropy is parabolic and constant within the waveguide. Orthogonality conditions for transversal modes within the parabolic approximation of slowness are… CONTINUE READING
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