Finite-difference time-___domain method: Difference between revisions

Revision as of 14:32, 18 October 2005

Revision as of 16:27, 18 October 2005

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Because FDTD is solved by propagating the fields forward

in the time ___domain, the time response of the medium through which they travel needs to be modelled explicitly. For arbitrary response, this will involve a computationally expensive convolution, although in most cases the time response (or dispersion[[Dispersion_(optics)]]) can be modelled more simply. An alternative way of solving [[Maxwell's_equations]] that can treat arbitrary dispersion easily is the Pseudospectral Spatial-Domain method ([[PSSD]]), which instead propagates the

fields forward in space.