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Related Experiment Video

Updated: Mar 25, 2026

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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Annular arrayed-waveguide fiber for autofocusing Airy-like beams.

Hongchang Deng, Yonggui Yuan, Libo Yuan

    Optics Letters
    |February 13, 2016
    PubMed
    Summary
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    We demonstrate a novel optical fiber that generates an abruptly autofocusing circular Airy beam. This beam

    Area of Science:

    • Optical physics
    • Photonics
    • Waveguide technology

    Background:

    • Airy beams exhibit unique self-healing and non-diffracting properties.
    • Controlling beam propagation and focusing is crucial for optical applications.

    Purpose of the Study:

    • To propose and theoretically demonstrate a novel optical fiber for generating abruptly autofocusing circular Airy beams.
    • To investigate the wave propagation characteristics within this specialized fiber.

    Main Methods:

    • Utilizing coupled-mode theory to analyze wave propagation in the Airy fiber.
    • Employing the angular spectrum method to study beam propagation in free space.
    • Theoretical modeling and simulation of light-matter interaction within the fiber.

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    Main Results:

    • The proposed fiber successfully generates a circular Airy-like beam.
    • The output beam exhibits abrupt autofocusing behavior, with intensity maxima following a parabolic trajectory.
    • The focal point position can be precisely controlled by adjusting the input wavelength.

    Conclusions:

    • The novel optical fiber provides a viable method for generating controllable, abruptly autofocusing circular Airy beams.
    • This technology has potential applications in areas requiring precise beam focusing and manipulation.
    • Wavelength tunability offers a simple mechanism for controlling the beam's focal properties.