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对芯子为克尔型非线性介质、覆盖层和衬底为线性介质的平板波导，在弱非线性近似下，导出了这类波导横向电场波满足的色散方程和场分布，其物理意义清晰，且大大降低了数值计算的强度
In the weak nonlinear approximation, the dispersion equation and the field distribution of the transverse electric field waves of the waveguide are derived for the Kerr-type non-linear medium, the cladding layer and the substrate as the linear medium. The physical meaning of the waveguide is clear , And greatly reduce the numerical calculation of the strength