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相关概念视频

Transmission Line Design Considerations01:23

Transmission Line Design Considerations

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Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
166
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

111
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
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Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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Scaling01:26

Scaling

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In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
278
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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Frequency-dependent Selection01:21

Frequency-dependent Selection

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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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相关实验视频

Updated: Jul 20, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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一个基于优化算法和分散工程的多通道频率路由器.

Hongyi Yuan1, Nianen Zhang1, Hongyu Zhang1

  • 1Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education, Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, China.

Nanomaterials (Basel, Switzerland)
|July 29, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种新的带隙优化算法,用于设计紧的多通道集成频率路由器. 新的纳米光子设备有效地路由光频率,增强芯片上的信息处理能力.

关键词:
频率路由器的频率路由器多通道的多通道服务.这是一个合成维度.拓优化的拓优化

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Last Updated: Jul 20, 2025

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科学领域:

  • 纳米光子学 纳米光子学
  • 集成光学 集成光学 集成光学
  • 拓学光子学 拓学光子学

背景情况:

  • 集成频率路由器是指导不同频率的光到不同的输出端口的关键纳米光子设备.
  • 实现具有多个通道的紧频路由器一直是一个重大挑战,限制了它们在纳米光子学中的应用.
  • 光子边缘状态为频率路由提供了潜力,但它们与紧型设备的整合是复杂的.

研究的目的:

  • 为设计多通道频率路由器提出并演示一种新的带隙优化算法.
  • 为了实现超紧的设备尺寸,同时增加道和输出端口的数量.
  • 为了实现强大而高效的芯片上多通道宽带信息处理.

主要方法:

  • 使用带隙优化算法,结合有限元法和拓优化.
  • 设计支持光子边缘状态的通道,跨越转化变形的合成维度.
  • 对于频率路由器,采用一个全介电平面配置.

主要成果:

  • 成功设计了一个多通道频率路由器,最多有九个通道和超紧尺寸的输出端口.
  • 在0.585-0.665c/a (1.504-1.709μm) 的工作频段内实现操作,覆盖1.55μm电信波长.
  • 由于拓彩虹效应,已证明对制造错误的稳定性,平均交叉声量为-11.49 dB,灭绝率为16.18 dB.

结论:

  • 开发的优化算法可以创建具有增强性能的紧型多通道频率路由器.
  • 拟议的设备提供了一种适用于各种材料和频率范围的通用方法,用于芯片上的信息处理.
  • 紧,坚固和可集成的全介电平面配置为先进的纳米光子应用提供了新的途径.