Equivalence of the digital waveguide and finite difference time domain schemes
نویسندگان
چکیده
منابع مشابه
On the Equivalence of the Digital Waveguide and Finite Difference Time Domain Schemes
It is known that the digital waveguide (DW) method for solving the wave equation numerically on a grid can be manipulated into the form of the standard finite-difference time-domain (FDTD) method (also known as the “leapfrog” recursion). This paper derives a simple rule for going in the other direction, that is, converting the state variables of the FDTD recursion to corresponding wave variable...
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The finite-difference-time-domain (FDTD), although recognized as a flexible, robust and simple to implement method for solving complex electromagnetic problems, is subject to numerical dispersion errors. In addition to the traditional ways for reducing dispersion, i.e., increasing sampling rate and using higher order degrees of accuracy, a number of schemes have been proposed recently. In this ...
متن کاملFinite difference schemes and digital waveguide networks for the wave equation: stability, passivity, and numerical dispersion
In this paper, some simple families of explicit two-step finite difference methods for solving the wave equation in two and three spatial dimensions are examined. These schemes depend on several free parameters, and can be associated with so-called interpolated digital waveguide meshes. Special attention is paid to the stability properties of these schemes (in particular the bounds on the space...
متن کاملمحاسبه ساختار باند بلورهای فوتونی دو بعدی با استفاده از روش finite difference time domain (fdtd(
چکیده ندارد.
15 صفحه اولFinite-Difference Time-Domain Simulation of Light Propagation in 2D Periodic and Quasi-Periodic Photonic Structures
Ultra-short pulse is a promising technology for achieving ultra-high data rate transmission which is required to follow the increased demand of data transport over an optical communication system. Therefore, the propagation of such type of pulses and the effects that it may suffer during its transmission through an optical waveguide has received a great deal of attention in the recent years. We...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2004
ISSN: 0001-4966
DOI: 10.1121/1.4785237