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相关概念视频

Bewley Lattice Diagram01:12

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The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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在波导网格中的光学模式控制的拓边缘状态.

Changyu Zhou1, Zhenwei Xie1, Ting Lei1

  • 1Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous Integration, Shenzhen University, Shenzhen 518060, China.

Nanophotonics (Berlin, Germany)
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概括

研究人员使用Su-Schrieffer-Heeger (SSH) 波导网格在光子系统中开发了可控制的拓边缘状态 (TES). 这一创新使得强大的光学设备能够精确地操纵光线,而不会改变拓相.

关键词:
这是一个SSH模型.拓边缘状态 拓边缘状态拓模式分割器的拓模式分割器波导网格的波导网格.

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科学领域:

  • 光子学 是一个光子学.
  • 拓物理 拓物理
  • 凝聚物质物理学 凝聚物质物理学

背景情况:

  • 拓边缘状态 (TES) 提供单向光传输,增强光子系统的稳定性,用于光学隔离和拓激光器等应用.
  • 当前的研究往往缺乏对生成的TES的控制,限制了它们的操纵和应用潜力.
  • 现有的生成TES的方法通常是固定的,阻碍了动态控制和高级功能.

研究的目的:

  • 在光子系统中提出和演示可控制的拓边缘状态 (TES) 的新方案.
  • 为了使TES可以在不改变系统的拓阶段的情况下进行操作.
  • 实现基于受控TES的有效模式分割器.

主要方法:

  • 一个拓性的苏-施里弗-希格尔 (SSH) 波导网格的实现.
  • 在SSH波导网格的边缘选择性光定位,受特定波导模式的控制.
  • 在芯片上的设备的制造和实验验证.

主要成果:

  • 在SSH波导网格中展示可控制的TES.
  • 成功分离波导模式,作为有效的模式分离器.
  • 实验验证在1550nm时的模式灭绝比率约为10dB.

结论:

  • 拟议的SSH波导网格方案使可控制的TES能够在没有拓相变的情况下实现.
  • 这种方法为操纵光子系统中的TES提供了一种有前途的方法.
  • 这些发现有助于设计可控制的拓光子设备和光学模式分割器.