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相关概念视频

Cascaded Op Amps01:16

Cascaded Op Amps

1.1K
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
1.1K
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

528
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
528
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

425
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
425

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相关实验视频

Updated: Jan 15, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

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基于级联相位控制的双层光学相位阵列收发器.

Yaoyuan Zhang1, Rui Wang2, Ming Wei1

  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.

Scientific reports
|October 15, 2025
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的双层光学相位阵列 (OPA),用于先进的光检测和距离测量 (LiDAR) 系统. 这种3D设计克服了传统平面架构的局限性,为人工智能驱动的光学设备提供了更高效,更紧的光束方向.

关键词:
控制光束的控制器.微纳米结构设计的设计光学相位阵列的光学相位阵列.光子集成技术的整合波导元件 波导元件

更多相关视频

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

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相关实验视频

Last Updated: Jan 15, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.5K
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.3K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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科学领域:

  • 光子学和光学工程的工程.
  • 人工智能 (AI) 硬件 硬件
  • 集成光学 集成光学 集成光学

背景情况:

  • 基于的光学相位阵列 (OPA) 对人工智能辅助的LiDAR和智能光学设备至关重要.
  • 由于复杂的波导路由和平面架构,传统的2D OPA面临元素间距和扫描角度的限制.
  • 高密度集成需求需要探索3D设计,以克服目前的局限性.

研究的目的:

  • 为了引入一种新的双层,层次的光学相位阵列设计.
  • 提高空间效率,克服2D OPA中的整合挑战.
  • 为了实现更广角的2D光束转向,用于先进的LiDAR应用.

主要方法:

  • 提出了一种双层架构,配有级联相位移器.
  • 战略上分离的波导路由 (下层) 和天线阵列 (上层).
  • 为实现双层结构利用先进的微/纳米制造.

主要成果:

  • 通过超紧的5微米天线距离,实现了前所未有的空间效率.
  • 经过±18.1°扫描角度的远场光束转向能力.
  • 确认了当前微/纳米制造工艺节点的可行性.

结论:

  • 双层层次的层次OPA设计为光学设备的超高集成提供了可行的途径.
  • 这种方法可以实现高效,紧,范围广的二维光束控制.
  • 介绍了下一代LiDAR和AI驱动光学系统的新研究方向.