TY - JOUR
T1 - Calculating scattering spectra using time-domain modeling of time-modulated systems
AU - Mock, Adam
N1 - Publisher Copyright:
© ACES.
PY - 2020/11
Y1 - 2020/11
N2 - 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.
AB - 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.
KW - Cavity resonators
KW - Finite-difference time-domain method
KW - Time-varying circuits
UR - http://www.scopus.com/inward/record.url?scp=85101701840&partnerID=8YFLogxK
U2 - 10.47037/2020.ACES.J.351113
DO - 10.47037/2020.ACES.J.351113
M3 - Article
AN - SCOPUS:85101701840
SN - 1054-4887
VL - 35
SP - 1288
EP - 1289
JO - Applied Computational Electromagnetics Society Journal
JF - Applied Computational Electromagnetics Society Journal
IS - 11
ER -