Nonlinear behavior of magnetostatic surface waves in ferrite film multilayer structure

Summary form only given. Magnetostatic surface waves (MSSW) have nonreciprocity between counterpropagating modes, and these characteristics could be useful for applications such as isolators. We have investigated the nonlinear coupling coefficients depending on the direction of the power-handling coupler for the waveguide structure by solving numerically the coupled nonlinear Schrodinger equations. The nonlinear coupling of MSSW in a YIG double layer waveguide is estimated quantitatively with the use of the perturbation method, and the possibility of the power-handling coupler in the structure is shown by solving numerically the coupled nonlinear Schrodinger equations. By increasing the number of the coupled YlG layers, the discrete solitons could be excited. This may lead to more functional self-controlling of the output RF signal in each port by the input power.