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Related Concept Videos

Intensity Of Electromagnetic Waves01:22

Intensity Of Electromagnetic Waves

The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:

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Updated: Jun 12, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Published on: March 20, 2017

Optical communication based on tunable intensity vortex arrays.

Dongyin Wang, Shunda Wang, Jianing Liu

    Optics Express
    |June 11, 2026
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed tunable intensity vortex arrays (TIVA) for precise control over light focal point intensity. This innovation enables new possibilities for optical encryption and high-fidelity information transmission.

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    Last Updated: Jun 12, 2026

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    Area of Science:

    • Optics and Photonics
    • Information Technology

    Background:

    • Vortex arrays traditionally control topological charge, position, and polarization.
    • Focal point intensity has not been a systematically controlled dimension in vortex arrays.

    Purpose of the Study:

    • To propose and demonstrate tunable intensity vortex arrays (TIVA) with independently controllable focal point intensities.
    • To introduce focal intensity as a new, designable information dimension in optical systems.

    Main Methods:

    • Optimizing phase superposition weight coefficients using a physics-informed neural network.
    • Experimental demonstration of TIVA with an 8-focal-point configuration.

    Main Results:

    • Achieved precise intensity control at arbitrary ratios across focal points.
    • Demonstrated high precision and robustness with a maximum normalized RMSE below 3.94%.
    • Implemented joint topological charge-intensity encoding for image transmission.

    Conclusions:

    • TIVA offers a novel degree of freedom for optical information manipulation.
    • Achieved high decoding accuracy (99.95%) in image reconstruction, showcasing potential for optical encryption and data transmission.