Comparison between Staggered and Unstaggered Finite-Difference Time-Domain Grids for Few-Cycle Temporal Optical Soliton Propagation L. Gilles,∗,† S. C. Hagness,∗ and L. Vázquez† ∗Department of Electrical and Computer Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, Wisconsin 53706; and †Departamento de Matemática Aplicada, Escuela Superior de Informática, Universidad Compl...

This paper describes an efficient urban outdoor and indoor wave propagation model that supports receiver performance and coverage analyses as well as system effectiveness analyses within urban canyon environments described in the Compact Terrain Database (CTDB) format. The model has been used to support Joint MEASURE based analyses of GPS III performance/coverage within a typical urban environm...

A hybrid method for analysis of electromagnetic propagation in large unbounded wave structures is presented. This method is a combination of Gaussian Beam Tracing (GBT), Gabor Expansion and the Finite Difference Time Domain method (FDTD). The input field is first expanded into a sum of Gaussian Beams (GBs) using the Gabor Expansion. The resultant GBs are launched inside the system and traced us...

Both experiments and finite difference time domain (FDTD) calculations show that infrared (IR) absorption spectroscopy and IR transmission resonances of metal films with arrays of subwavelength holes (meshes) are more sensitive to material in the holes of the mesh than to material on the front or back surfaces of the mesh. IR extinction spectra of isolated, individual latex (polystyrene) sphere...

The band gap for 2D PhC with different modes and different lattice structures using FDTD have been computed. Three PBGs between the first and the second bands, between the second and the third bands and between the fourth and fifth bands are concluded. Simulation results shows that for band structure computation is of 1D PhC using FDTD, it is found that some additional solutions appear, which a...

Extraordinary transmission through a metal film with an array of subwavelength holes (mesh) can be modeled effectively using three-dimensional finite difference time domain (3D-FDTD) calculations. A simple 3DFDTD model, where a plane wave of light at perpendicular incidence with no angular spread interacts with a periodic repeating mesh, models the shape and location of the transmission resonan...

The Goos-Hänchen shift on the surface when an optical beam is obliquely incident from one isotropic right-handed material (RHM) into another biaxial anisotropic left-handed material (BALHM) is numerically studied with the finite difference time domain (FDTD) method based on the Drude dispersive models. The analytical expression of the Goos-Hänchen shift is firstly presented, moreover the condit...

In this paper, We design a novel Hexagonal Lattice photonic crystal fiber (PCF) made of soft glass achieving low confinement loss and low chromatic dispersion through the optimization of the arrangement and diameter of circular air holes. The motivation behind this is to optimize the design parameter of PCF to gain low-flattened chromatic dispersion and low confinement loss at wide wavelength r...

The focusing resolution is very important performance for ultra wideband (UWB) imaging system. In this paper, the accuracy of focusing resolution with time-reversal (TR) electromagnetic (EM) pulse propagation is analyzed. The TR EM pulse propagation is done via the numerical simulation of finite difference time domain (FDTD) method. The modulated Gaussian pulse is used as the UWB EM pulse. The ...

The paper presents the results of numerical analyses of the structures of integrated optics in the form of planar waveguides made of materials with high values of the refractive index n = 2.00 and with an input-output system in the form of Bragg grating couplers. The numerical investigations were carried out by using the FDTD method (Finite Difference Time Domain method).