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Nonlinear Response of Electromagnetic Surface Waves in a Tangentially Magnetized Ferrite Slab
Tetsuya UEDA Makoto TSUTSUMI
IEICE TRANSACTIONS on Electronics
Publication Date: 2000/10/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
nonlinear phenomena, ferrite slab, magnetostatic surface waves, nonlinear Schrodinger equation, reductive perturbation method,
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Nonlinear behavior of electromagnetic surface waves propagating along a tangentially magnetized ferrite slab is investigated. The nonlinear Schrodinger equation (NLSE) which describes the temporal evolution of the electromagnetic wave pulses has been derived directly from the Maxwell equations and the equation of precessional motion for the magnetization in the ferrite slab with the aid of the reductive perturbation method without magnetostatic approximation. Based on the formula derived, we have numerically evaluated the frequency-dependence of the nonlinear coefficient in the NLSE for both a magnetostatic surface wave mode and a dynamic mode. As a result, we have confirmed the possibility of the propagation of solitons in the waveguide.