Efficient curvilinear coordinate method for grating diffraction simulation

AA Shcherbakov, AV Tishchenko - Optics express, 2013 - opg.optica.org
The article presents a new method for rigorous simulation of the light diffraction on one-
dimensional gratings. The method is capable to solve metal-dielectric structures in linear …

Hybridization of the rigorous coupled-wave approach with transformation optics for electromagnetic scattering by a surface-relief grating

BJ Civiletti, A Lakhtakia, PB Monk - Journal of Computational and Applied …, 2022 - Elsevier
We hybridized the rigorous coupled-wave approach (RCWA) with transformation optics to
develop a hybrid coordinate-transform method for solving the time-harmonic Maxwell …

Mode solver based on Gegenbauer polynomial expansion for cylindrical structures with arbitrary cross sections

K Edee, M Abboud, G Granet, JF Cornet, NA Gippius - JOSA A, 2014 - opg.optica.org
We present a modal method for the computation of eigenmodes of cylindrical structures with
arbitrary cross sections. These modes are found as eigenvectors of a matrix eigenvalue …

Investigation of cylindrical waveguides with periodic wedge-shaped azimuthal corrugations excited by TE modes using the FDTD method

DV Peponis, GP Latsas, IG Tigelis - Journal of Infrared, Millimeter, and …, 2021 - Springer
Modern gyrotron beam tunnels are rather complicated structures designed to enhance the
suppression of the parasitic oscillations, which may be excited there. In some beam tunnel …

A new modal method for the grating diffraction

L JianLong - Optik, 2021 - Elsevier
A new method whose basis function expressed by that of a interface is proposed to analysis
the grating diffraction, which can solve the physical defects of the Rayleigh method and …

Numerical stability of the C method and a perturbative preconditioning technique to improve convergence

X Xu, L Li - JOSA A, 2017 - opg.optica.org
The translational coordinate transformation method (the C method) in grating theory is
studied numerically and analytically. We first study the convergence characteristics of the C …

Local transformation leading to an efficient Fourier modal method for perfectly conducting gratings

S Félix, A Maurel, JF Mercier - JOSA A, 2014 - opg.optica.org
We present an efficient Fourier modal method for wave scattering by perfectly conducting
gratings (in the two polarizations). The method uses a geometrical transformation, similar to …

Optimization of waveguide enhanced Raman spectroscopy systems

Z Liu - 2023 - eprints.soton.ac.uk
Waveguide-enhanced Raman spectroscopy (WERS) is becoming a promising emerging
technology, and this work is aiming at three major problems that general WERS system are …

General analytical solution for the electromagnetic grating diffraction problem

AV Tishchenko, AA Shcherbakov - Optics Express, 2017 - opg.optica.org
Implementing the modal method in the electromagnetic grating diffraction problem delivered
by the curvilinear coordinate transformation yields a general analytical solution to the 1D …

茅山军号声现象的进一步研究

杨政予, 王新龙 - 南京大学学报(自然科学版), 2015 - jns.nju.edu.cn
本文提出了声学负反射的概念, 以解释茅山军号声现象的物理机制. 首先建立平面声波在周期
台阶状边界上的反射模型, 利用边界扰动的方法, 给出了该问题的精确解. 发现在共振区域 …