Calculating scattering spectra using time-domain modeling of time-modulated systems

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4 Scopus citations


Obtaining agreement between theoretical predictions that assume single-frequency excitation and finite-difference time-domain (FDTD) simulations that employ broadband excitation in the presence of time-varying materials is challenging due to frequency mixing. A simple solution is proposed to reduce artifacts in FDTD-calculated spectra from the frequency mixing induced by harmonic refractive index modulation applicable to scenarios in which second order and higher harmonics are negligible. Advantages of the proposed method are its simplicity and applicability to arbitrary problems including resonant structures.

Original languageEnglish
Pages (from-to)1288-1289
Number of pages2
JournalApplied Computational Electromagnetics Society Journal
Issue number11
StatePublished - Nov 2020


  • Cavity resonators
  • Finite-difference time-domain method
  • Time-varying circuits


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