论文标题
由Pancharatnam-Berry阶段驱动的波浪
Waveguiding driven by the Pancharatnam-Berry phase
论文作者
论文摘要
我们在理论上和数字上根据Pancharatnam-Berry相研究波导的性质，该相通过在横向扭曲的双向培养基中纵向周期性旋转获得。在本文中，我们研究了选择纵向调制周期的情况，以便发生在传播中的几何阶段的净积累。首先，解决了对光电位的不同贡献之间的相互作用。其次，在数值模拟中观察到了准模型的极化结构的连续演变。我们通过基于平面波的模型和量规变换的组合来解释它。我们发现，除了纵向振荡之外，准模式的极化也随其横截面而变化。概述了在磁场中移动的带电粒子方面的类比。
We theoretically and numerically investigate the properties of waveguides based on the Pancharatnam-Berry phase, obtained by a longitudinally periodic rotation of the optic axis in a transversely-twisted birefringent medium. In this paper we study the case where the period of the longitudinal modulation is chosen so that a net accumulation of geometric phase in propagation occurs. First, the interplay between different contributions to the optical potential is addressed. Second, a continuous evolution of the polarization structure of the quasi-modes is observed in the numerical simulations. We explain it by a combination of plane-wave-based models and gauge transformations. We discover that, beyond the longitudinal oscillations, the polarization of the quasi-mode also varies through its cross-section. The analogies with respect to charged particles moving in a magnetic field are outlined.
