2024年6月24日 · This letter presents a parallel frequency-domain finite-difference (FDFD) algorithm based on multi-graphic processing unit (GPU) applied to electromagnetic scattering computations to enhance the computational efficiency of the algorithm.

It provides a finite-difference frequency-domain (FDFD) solver for simulating for linear and nonlinear devices in the frequency domain. It also provides an easy to use package for adjoint-based inverse design and optimization of linear and nonlinear devices.

The finite-difference frequency-domain (FDFD) method is a numerical solution method for problems usually in electromagnetism and sometimes in acoustics, based on finite-difference approximations of the derivative operators in the differential equation being solved. [1]

In this Letter, we introduce a multi-frequency finite-difference frequency-domain (MF-FDFD) technique in order to perform first-principles calculations of active devices that possess multiple time scales.

Special techniques in MATLAB® are presented that will allow the reader to write their own FDFD programs. Key concepts in electromagnetics are reviewed so the reader can fully understand the calculations happening in FDFD.

The Finite-Difference Frequency-Domain (FDFD) technique is a general-purpose numerical technique for the solution of Maxwell’s equations of electromagnetism in the frequency domain. It can be applied to structures of any length scale and …

2023年4月1日 · Written by Dr. Raymond C. Rumpf, the EMProfessor, this book teaches the art of computational electromagnetics using the finite-difference frequency-domain (FDFD). The books starts from the simplest concepts and works up to advanced three-dimensional simulations.

First, we make the matrix A significantly better-conditioned by using the stretched-coordinate perfectly matched layer (SC-PML) rather than the more commonly used uniaxial PML (UPML) as an absorbing boundary. Second, we eliminate the high multiplicity of near-zero eigenvalues of A by utilizing the continuity equation.

2018年4月18日 · Abstract: The finite-difference frequency-domain (FDFD) method is one of the most effective methods for obtaining the frequency responses of specific optical components, such as thin films and guided wave structures. This letter describes an efficient algorithm based on the FDFD method to perform optical and plasmonic analyses.

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