论文标题

通过特殊的退化点(EPDS)追求复杂的光能

Pursuing complex optical energy through Exceptional Points of Degeneracy (EPDs)

论文作者

Moradi, Shahram

论文摘要

我们利用在人为的异常变性点之间在散射状态和指南状态之间平衡复杂的光能,以形成活跃的波导而不利用活性介质。这项研究报告了一阶分散在伪 - 温米特汉密尔顿系统上的特殊工程,其中分布式的bragg光栅轨道第0^散射相移的顺序。这是由于EDP通过平面光子晶体中的1D扰动Pt-symerties刺激的。 Bloch本征状态的合并是由于调制的两端光学分量的反向融合而发生的,其增益和损耗参数取决于光路的方向。然后,我们以时间顺序以两种状态,物理平衡(在结合层中)和非平衡(以未结合的层为单位)围绕一个状态,物理平衡(以未结合层为单位)使用了1D二元超晶格。然后,将光学能量重新耦合到潜在的结合区域会损害每个序列中的散射相移。这项成就不仅扩大了对革命性量子力学的理解,而且还有益于用高Q因子来指导定位的技术原则,这些原理在设计低阈值转换,光学镊子,激光,激光和各种类型的光子元素中,在光子集成电路中都有巨大的需求。

We exploit balancing the complex optical energy between scattering and guiding states at contrived exceptional points of degeneracy in order to form an active waveguide without utilizing an active medium. This study reports peculiar engineering of first-order dispersion on a pseudo-Hermitian Hamiltonian system in which distributed Bragg grating tracks 0^th order of scattering phase-shift. This is owing to the EDPs instigated by means of 1D perturbing PT-symmetries in a planar photonic crystal. The coalescence of Bloch eigenstates occurs due to reverse amalgamation of modulated two-terminal optical component whose gain and loss parameters depends on the direction of the light path. Then, we employed a 1D binary superlattice around a defect that undergoes both states, physical equilibrium (in the bound layer) and non-equilibrium (in unbound layer), in chronological order. Then, recoupling optical energy to the underlying bound region compromises scattering phase-shift in each sequence. This achievement is not only broadening the understanding of revolutionized quantum mechanics but also benefits technological principles of steering localization with high Q-factors that are in huge demands of designing low-threshold switching, optical tweezers, lasing and various types of optical elements in photonic integrated circuits.

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