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相关概念视频

Design Example01:23

Design Example

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The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
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彩色编码的半导体转向编程的太赫兹切换.

Weibao He1,2,3, Xiang'ai Cheng1,2,3, Siyang Hu1

  • 1College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China.

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研究人员开发了一种光学编程的太赫兹开关,使用组合的超表面进行2位双通道太赫兹编码. 这推动了用于通信和成像应用的太赫兹设备的全光学控制.

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科学领域:

  • 光电学是指光电子产品.
  • 超材料是指一种超材料.
  • 特拉赫兹技术的技术.

背景情况:

  • 太赫兹调制器对于高速无线通信和非破坏性成像至关重要.
  • 目前的全光特拉赫兹调制方法在编码能力和多功能性方面存在局限性.

研究的目的:

  • 为了演示一个具有增强编码和多功能性的光学编程的太赫兹开关系统.
  • 为所有光学编程的太赫兹半端设备建立一个平台.

主要方法:

  • 将光学元表与太赫兹元表相结合,用于一个复合元器件.
  • 利用半导体岛屿和人造微观结构在太赫兹超表面进行全光学编程.
  • 采用光学超表面来改变空间光分布以进行颜色编码的控制.

主要成果:

  • 在纳秒级别实现了超快速调制的2位双通道太赫兹编码.
  • 通过色彩激发证明了在太赫兹元表面中对能量消散模式的独立控制.
  • 通过时间域合模式理论分析验证了2位编码原理.

结论:

  • 开发的系统能够有效地对太赫兹信号进行全光学编程.
  • 这项工作为使用复合元表面进行太赫兹操纵提供了一种新的方法.
  • 这些发现为半端设备在太赫兹科学和技术中的先进应用铺平了道路.