GPU and CPU-Based Parallel FDTD Methods for Frequency-Dependent Transmission Line Models

Gunawardana, Manuja; Kordi, Behzad

doi:10.1109/lemcpa.2022.3191597

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…The FDTD scheme uses Yee cells to store the electric and magnetic fields in space and can directly simulate the scattering and timedomain propagation response of electromagnetic field signals [18]. In addition, the FDTD method solves various relatively complex electromagnetic problems with simple and high accuracy and can be combined with various parallel computing techniques to improve computational efficiency [19][20][21].…”

Section: Numerical Approachmentioning

confidence: 99%

Investigation of Giant Nonlinearity in a Plasmonic Metasurface with Epsilon-Near-Zero Film

Liu

Feng

et al. 2023

Photonics

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Plasmonic metamaterials can exhibit a variety of physical optical properties that offer extraordinary nonlinear conversion efficiency for ultra-compact nanodevice applications. Furthermore, the optical-rectification effect from the plasmonic nonlinear metasurfaces (NLMSs) can be used as a compact source of deep-subwavelength thickness to radiate broadband terahertz (THz) signals. Meanwhile, a novel dual-mode metasurface consisting of a split-ring resonator (SRR) array and an epsilon-near-zero (ENZ) layer was presented to boost the THz conversion efficiency further. In this paper, to explore the mechanism of THz generation from plasmonic NLMSs, the Maxwell-hydrodynamic multiphysics model is adopted to investigate complex linear and intrinsic nonlinear dynamics in plasmonics. We solve the multiphysics model using the finite-difference time-domain (FDTD) method, and the numerical results demonstrate the physical mechanism of the THz generation processes which cannot be observed in our previous experiments directly. The proposed method reveals a new approach for developing new types of high-conversion-efficiency nonlinear nanodevices.

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