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相关概念视频

Modeling of Diode Forward Characteristics01:19

Modeling of Diode Forward Characteristics

Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
Modeling of Diode Reverse Characteristics01:14

Modeling of Diode Reverse Characteristics

In electronic circuits, reverse-biased diode configurations are critical for regulating voltage levels. Zener diodes exploit the reverse breakdown phenomenon and exhibit a controlled breakdown at a specific Zener voltage (VZ). They are designed to maintain a constant voltage across their terminals and are commonly used for voltage regulation in circuits.
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...

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相关实验视频

Updated: Jun 22, 2026

Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

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Published on: December 11, 2014

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可编程的非挥发性光子模拟到数字转换器,基于后端兼容的相变材料.

Gaofei Wang1,2, Jiabin Shen2,3, Yaping He1,2

  • 1School of Microelectronics, Fudan University, Shanghai, 200433, P. R. China.

Advanced materials (Deerfield Beach, Fla.)
|March 10, 2025
PubMed
概括
此摘要是机器生成的。

研究人员使用相变材料开发了一种可编程的光子模拟数字转换器 (ADC). 这种节能的光学ADC实现了8位分辨率,这是光学ADC中最高的分辨率,克服了电子限制.

关键词:
模拟数字转换器 模拟到数字转换器后端的线路过程过程.阶段变换材料 阶段变换材料可以编程的可编程性.光子学是一种光子学.

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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相关实验视频

Last Updated: Jun 22, 2026

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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科学领域:

  • 光子学 是一个光子学.
  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程

背景情况:

  • 电子模拟数字转换器 (ADC) 在带宽,精度和功耗方面面临限制.
  • 光子ADC为克服信号处理中的这些挑战提供了一个有希望的替代方案.

研究的目的:

  • 通过将相变材料 (PCM) 与光子学集成来开发可编程的光子ADC.
  • 在光学模拟到数字转换中展示高分辨率和能源效率.

主要方法:

  • 使用造加工的光子学和相变材料制造光子ADC.
  • 在单个芯片上展示2位和4位光子ADC.
  • 实验验证65个状态的PCM以实现高分辨率.

主要成果:

  • 在量子化过程中实现了零能耗,这是由于PCM的非挥发性.
  • 展示了8位分辨率的光子ADC,这是光学技术中报告的最高值.
  • 集成光子ADC与光学采样为一个全光学系统转换321 MHz的射频信号在40 MS/s.

结论:

  • 开发的可编程光子ADC在能源效率和速度方面取得了重大进展.
  • 这项技术代表了高性能信号处理和电信系统的重大进步.
  • 光子ADC为当前电子ADC固有的局限性提供了可行的解决方案.