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関連する概念動画

Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

598
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
598
Concept of Resonance and its Characteristics01:19

Concept of Resonance and its Characteristics

6.0K
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not...
6.0K
Sound Waves: Resonance01:14

Sound Waves: Resonance

3.2K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
3.2K
Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

542
Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
542
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.4K
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:
1.4K
Parallel Resonance01:23

Parallel Resonance

495
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
495

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Updated: Jan 8, 2026

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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分散エンジニアリングを伴う同心リング共振器のモデリング方法

Mehedi Hasan, Seungyup Baek, Ayrton Bernussi

    Optics express
    |December 19, 2025
    PubMed
    まとめ
    この要約は機械生成です。

    分散をエンジニアリングするために同心リング共振器を設計するための幾何学ガイド法を開発しました。このアプローチにより、明るいソリトンをサポートするデバイスの作成が可能になり、集積非線形フォトニクスが進歩します。

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    Last Updated: Jan 8, 2026

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    Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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    科学分野:

    • 集積フォトニクス
    • 非線形光学
    • 材料科学（窒化ケイ素）

    背景:

    • 同心リング共振器は、集積フォトニックデバイスの鍵となります。
    • 分散エンジニアリングは、光伝搬と非線形効果を制御するために重要です。
    • 従来の共振器の弱ガイドモードは、通常、正常分散を示します。

    研究 の 目的:

    • 分散エンジニアリングのための同心リング共振器の幾何学ガイド設計方法を導入すること。
    • 新しいOPLマップを使用して位相整合ジオメトリを効率的に特定すること。
    • 異常分散と明るいソリトンのサポートが可能な窒化ケイ素同心リング共振器を設計すること。

    主な方法:

    • 2Dラウンドトリップ光路長（OPL）マップを構築するための単一リングの固有モードシミュレーション。
    • 位相整合ジオメトリと結合条件の体系的な特定。
    • ソリトン形成を検証するためのLugiato-Lefever方程式（LLE）シミュレーション。

    主要な成果:

    • 実現可能なリングとギャップの組み合わせを効率的に特定するための2D OPLマップを開発しました。
    • 弱ガイドモードで異常分散を示す50 nm厚のSi3N4同心リング共振器を設計しました。
    • LLEシミュレーションにより、分散エンジニアリングされたモードでの明るいソリトンのサポートを確認しました。

    結論:

    • 幾何学ガイドOPLマップ法は、分散エンジニアリングのための同心リング共振器の設計を合理化します。
    • 弱ガイドモードのエンジニアリングされた同心リング共振器では、異常分散と明るいソリトンの形成が可能です。
    • 提案された方法は用途が広く、集積非線形フォトニクスのさまざまな材料や波長に適用可能です。