Abstract

Frequency-degenerate mixing of forward and backward propagating fast modes is considered in a planar optical waveguide based on a thin left-handed film and a right-handed substrate exhibiting the Kerr effect. Nonlinear coupled-mode equations are solved for the intensities of these modes in the neglect of the contributions of elementary processes that fail to satisfy the phase-matching condition. It is shown that the intramode self-action of four TE modes is accompanied by energy exchange between these modes. The efficiency of energy exchange varies periodically along the propagation direction of modes, thus leading to the inversion of the intensities of forward and backward propagating light fields on the interaction half-period.

中文翻译：

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非线性衬底上左手薄膜的四种快速TE 2模式的简并混合下的能量交换

摘要

在基于薄的左手薄膜和右手基板的克尔效应的平面光波导中，考虑了向前和向后传播的快模的频率退化混合。忽略了不满足相位匹配条件的基本过程的贡献，针对这些模式的强度求解了非线性耦合模式方程。结果表明，四种TE模式的模式内自作用伴随着这些模式之间的能量交换。能量交换的效率沿模式的传播方向周期性变化，从而导致交互作用半周期中前向和后向传播光场的强度反转。