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In this paper, we investigate the usefulness of the wide-angle Fast Fourier Transform-based Beam Propagation Method (FFT-BPM) in computational plasmonics. Major numerical difficulties associated with the singularity of the transverse derivative of the step-like refractive index at the interface plane, especially for the TM case, are circumvented using an equivalent-index formalism. A trigonometric...
A new design for silicon Mach-Zehnder photonic interferometer with a different cross-sectional area than that for conventional silicon waveguide is proposed. The structure has the potential to be used as a modulator with extremely large extinction ratio as compared to conventional silicon waveguides based MZI modulators. This enabled using our design in different micro-scale applications including...
A promising technique that reduce significantly the simulation time of 3D finite difference time domain (FDTD) electromagnetic (EM) simulation is proposed. The technique uses the well-known effective index method (EIM) to reduce the 2D index profile waveguide to an equivalent 1D slab waveguide which then can be simulated significantly faster using 2D FDTD simulation. We examined our technique by simulating...
This work describes the initial principles of microwave discernibility conditions for metallic sphere, placed at the center of waveguide cross section. Having previously obtained data for this position, low frequencies range for transmission line are in interest. For further clarification, recombination algorithm from free space to line reflection coefficient was developed. New obtained formulation...
In this paper, a fast (and) convergent method to analyze propagation in polygonal cross-section dielectric waveguides is presented. The problem formulated as an homogeneous surface integral equation in the spectral domain is discretized by means of Galerkin method with analytically Fourier transformable expansion functions reconstructing the behavior of the fields on the wedges. Moreover, the elements...
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