First-order perturbation theory of eigenmodes for systems with interfaces

HIGHLIGHTS

  • who: Z. Sztranyovszky from the SchoolCardiff University, Cardiff , AA, United Kingdom have published the research: First-order perturbation theory of eigenmodes for systems with interfaces, in the Journal: (JOURNAL) of 28/03/2023
  • what: The authors show that when interfaces deform higher-order terms of the perturbation series can contribute to the eigenmode frequencies in first order in the deformation depth. The aim of this article is twofold. Using EM for illustration, the authors demonstrate this surprising finding in terms of static (zerofrequency) modes of a nondispersive open optical system. Substituting it into Eq results . . .

     

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