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Optical wireless positioning by modulation of the optical source orientation.

Luc Chassagne, Bastien Béchadergue, Olivier Barrois

    Optics Express
    |August 13, 2025
    PubMed
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    This study introduces a novel optical wireless communication (OWC) positioning method using a single beam-steering optical source. The technique achieves precise 2D positioning with sub-10 cm errors, simplifying OWC systems.

    Area of Science:

    • Engineering
    • Computer Science
    • Communications

    Background:

    • Optical wireless communications (OWC) systems aim for high-accuracy positioning.
    • Existing OWC positioning methods often require multiple optical sources or receivers, increasing complexity.
    • Beam-steering techniques are gaining traction in OWC applications.

    Purpose of the Study:

    • To propose a new 2D positioning technique for OWC systems.
    • To leverage beam-steering capabilities for simplified OWC positioning.
    • To enable accurate positioning using a single optical source and a single photodetector.

    Main Methods:

    • Developed a novel positioning technique based on changing the orientation of a single optical source.
    • Utilized beam-steering for 2D positioning of a receiver with a single photodetector.

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  • Validated the method through simulations and one-dimensional experimental tests.

    • Main Results:

    • The proposed method enables 2D positioning with sub-10 cm errors.
    • The technique functions regardless of receiver orientation and optical power.
    • It simplifies OWC positioning by using a single optical source and receiver.

    Conclusions:

    • The new beam-steering based positioning technique is effective for OWC.
    • It offers advantages in simplicity and accuracy compared to existing methods.
    • This approach is a promising solution for advanced OWC systems.