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In this paper, the Newmark-Beta algorithm is introduced into the finite-difference time-domain (FDTD) method in dispersion media, resulting in an unconditionally stable method for periodic metallic grating analysis. The proposed method eliminates the Courant–Friedrich–Levy constraint and improves the simulation efficiency for multiscale problems. The dispersion of the metal, which is caused by the...
In this paper, a frequency-dependent locally one-dimensional finite-difference time-domain (LOD-FDTD) method is developed for the extraordinary optical transmission (EOT) analysis of periodic metallic gratings. The dispersion of the metal, caused by the evanescent waves propagating along the interface between the metal and the dielectric materials in the visible and near infrared regions, is expressed...
In this paper, a generalized auxiliary differential equation (ADE) technique is utilized to develop a frequency-dependent locally one-dimensional finite-difference time-domain (LOD-FDTD) method for the extraordinary optical transmission (EOT) analyses of periodic metal gratings. The LOD-FDTD method is an unconditionally stable method which is not restricted by the Courant-Friedrich-Lewy (CFL) stability...
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