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A three-dimensional fourth-order finite-difference time-domain scheme using a symplectic integrator propagator

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4 Author(s)
Hirono, T. ; NTT Photonics Lab., Kanagawa, Japan ; Lui, Wayne ; Seki, Shunji ; Yoshikuni, Yuzo

A new explicit fourth-order finite-difference time-domain (FDTD) scheme for three-dimensional electromagnetic field simulation is proposed in this paper. A symplectic integrator propagator, which is also known as a decomposition of the exponential operator or a general propagation technique, is directly applied to Maxwell's equations in the scheme. The scheme is nondissipative and saves memory. The Courant stability limit of the scheme is 30% larger than that of the standard FDTD method. The perfectly matched layer absorbing boundary condition is applicable to the scheme. A specific eigenmode of a waveguide is successfully excited in the scheme. Stable and accurate performance is demonstrated by numerical examples

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:49 ,  Issue: 9 )