Frequency-Dependent LOD-FDTD Method in Cylindrical Coordinates

Jun SHIBAYAMA; Tatsuyuki HARA; Masato ITO; Junji YAMAUCHI; Hisamatsu NAKANO

doi:10.1587/transele.E101.C.637

Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics

Frequency-Dependent LOD-FDTD Method in Cylindrical Coordinates

Jun SHIBAYAMA, Tatsuyuki HARA, Masato ITO, Junji YAMAUCHI, Hisamatsu NAKANO

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Keywords: Drude-Lorentz model, fundamental scheme, locally one-dimensional finite-difference time-domain (LOD-FDTD) method, plasmonic devices, trapezoidal recursive convolution

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2018 Volume E101.C Issue 8 Pages 637-639

DOI https://doi.org/10.1587/transele.E101.C.637

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Abstract

The locally one-dimensional finite-difference time-domain (FDTD) method in cylindrical coordinates is extended to a frequency-dependent version. The fundamental scheme is utilized to perform matrix-operator-free formulations in the right-hand sides. For the analysis of surface plasmon polaritons propagating along a plasmonic grating, the computation time is significantly reduced to less than 10%, compared with the explicit cylindrical FDTD method.

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