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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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防雾光学摄像机通信使用波长分割复杂化.

Klára Eöllös-Jarošíková, Carlos Guerra-Yánez, Stanislav Zvánovec

    Optics express
    |November 11, 2025
    PubMed
    概括

    本研究介绍了一种使用侧向发射光纤和RGB激光器的新型光学相机通信系统. 它实现了可靠的数据传输,即使在密集的雾和低可见性条件下,确保安全.

    科学领域:

    • 光学摄像机通信通信
    • 光纤光学是指光纤的使用.
    • 无线通信无线通信

    背景情况:

    • 光学摄像头通信 (OCC) 面临着由于光散射和衰减而在低可见性方面面临的挑战.
    • 在雾等恶劣天气中保持可靠的OCC性能对于安全关键的应用至关重要.

    研究的目的:

    • 开发和评估一个强大的OCC系统,能够在低可见性条件下提供可靠的性能.
    • 通过使用RGB激光源来证明侧向发射的基于光纤的OCC系统的有效性.

    主要方法:

    • 实现了一种侧向发射的基于光纤的OCC系统,利用RGB激光源来提高亮度.
    • 采用三通道波长分割多重复合来增加数据容量.
    • 在各种低可见性场景中测试系统性能,测量传播损失和位错误率 (BER).

    主要成果:

    • 该系统在从20.8米到4.5米的可见度范围内实现了比特错误率 (BER) 低于前置错误校正 (FEC) 极限.
    • 测量的传播损失达到近4dB/m,可见度为5米.
    • 证明的BER值范围从1.8×10−4到1.6×10−3.

    结论:

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  • 拟议的侧向发射纤维OCC系统在低可见性条件下表现出显著的稳定性.
  • 使用RGB激光和波长分割多重复合提高了系统性能.
  • 该技术有可能在可见度差的环境中确保人类安全.