Abstract We theoretically study Dyakonov surface waveguide modes that propagate along the planar strip interfacial waveguide between two uniaxial dielectrics. We demonstrate that owing to the one-dimensional electromagnetic confinement, Dyakonov surface waveguide modes can propagate in the directions that are forbidden for the classical Dyakonov surface waves at the infinite interface. We show that this situation is similar to a waveguide effect and formulate the resonance conditions at which Dyakonov surface waveguide modes exist. We demonstrate that the propagation of such modes without losses is possible. We also consider a case of two-dimensional confinement, where the interface between two anisotropic dielectrics is bounded in both orthogonal directions. We show that such a structure supports Dyakonov surface cavity modes. Analytical results are confirmed by comparing with full-wave solutions of Maxwell’s equations. We believe that our work paves the way toward new insights in the field of surface waves in anisotropic media.

中文翻译：

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Dyakonov 表面波在扭曲约束介质中的尺寸约束和波导效应

摘要 我们从理论上研究了 Dyakonov 表面波导模式，该模式沿两个单轴电介质之间的平面带状界面波导传播。我们证明，由于一维电磁限制，Dyakonov 表面波导模式可以在无限界面处经典 Dyakonov 表面波禁止的方向上传播。我们表明这种情况类似于波导效应，并制定了 Dyakonov 表面波导模式存在的共振条件。我们证明了这种模式没有损失的传播是可能的。我们还考虑了二维限制的情况，其中两个各向异性电介质之间的界面在两个正交方向上都有界。我们表明这种结构支持 Dyakonov 表面腔模式。通过与麦克斯韦方程组的全波解进行比较，证实了分析结果。我们相信，我们的工作为各向异性介质中的表面波领域的新见解铺平了道路。