We compare, through simulations, the performance of four linear algorithms for diffuse optical tomographic reconstruction of the three-dimensional distribution of absorption coefficient within a highly scattering medium using the diffuse photon density wave approximation. The simulation geometry consisted of a coplanar array of sources and detectors at the boundary of a half-space medium. The f...

Recently, guiding electromagnetic (EM) waves with a mode at subwavelength scale has attracted great attention, in particular, at optical wavelengths. The related phenomenon is that of surface plasmon polaritons (SPPs) that are bound non-radiative surface waves propagating at metaldielectric interfaces with the fields decaying exponentially away from the interface [1]. Structures supporting such...

A simple filter application of a new efficient hybrid method is presented in this paper. The method combines the discrete finite difference method in frequency domain (FDFD) with analytical mode matching (MM) technique and orthogonal expansion method. The procedure allows for the analysis of electromagnetic wave scattering by cylindrical objects with arbitrary cross-section located within the r...

INTRODUCTION: Higher field strengths and new multi-coil-transmission methods require special attention regarding the patient safety. An often used approach to determine SAR is electromagnetic field simulation based on the Finite-Difference Time-Domain method (FDTD). This method requires accurate modelling of transmitting elements and the object itself. Due to long computation times, field calcu...

In this article, perfectly matched layer (PML) for the boundary treatment and an efficient compact two dimensional finite-difference frequency-domain (2-D FDFD) method were combined to model photonic crystal fibers (PCF). For photonic crystal fibers, if we assume that the propagation constant along the propagation direction is fixed, three-dimensional hybrid guided modes can be calculated by us...