相关实验视频

Updated: Jan 17, 2026

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

四维调制采用混合连接多级编码在短距离连贯光学传输中的四维调制

Yuyao Wen, Ze Dong, Jun Ming

    Optics express
    |September 23, 2025
    PubMed
    概括

    一种新的混合多级编码 (MLC) 四维 (4D) 调制方案增强了光学传输. 这种先进的4D调制提供了卓越的性能和强度,可以抵御像偏振依赖损失 (PDL) 这样的损害.

    更多相关视频

    Quasi-light Storage for Optical Data Packets07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    11.3K
    Generation and Coherent Control of Pulsed Quantum Frequency Combs06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.6K

    相关概念视频

    Propagation Speed of Electromagnetic Waves01:30

    Propagation Speed of Electromagnetic Waves

    Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
    4.6K
    Energy Stored In A Coaxial Cable01:31

    Energy Stored In A Coaxial Cable

    A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
    In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
    2.0K
    IR Frequency Region: X–H Stretching01:24

    IR Frequency Region: X–H Stretching

    In IR spectroscopy, signals produced by the X−H bonds (such as C−H, O−H, or N−H) can be observed in the frequency range of  2700–4000 cm–1. The C−H stretching vibration forms sharp bands in the region 2850–3000 cm–1. The presence of the O−H stretching vibration leads to the forming of an absorption band in the frequency range 3650–3200 cm−1. At the same time, N−H stretching can be confirmed by absorption bands in...
    1.4K
    Transmission Line Design Considerations01:23

    Transmission Line Design Considerations

    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...
    601
    Cascaded Op Amps01:16

    Cascaded Op Amps

    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