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Related Experiment Video

Updated: Jul 24, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Bi-Directional Free-Space Visible Light Communication Supporting Multiple Moveable Clients Using Light Diffusing

Yun-Han Chang1,2, Chi-Wai Chow1,2, Yuan-Zeng Lin1,2

  • 1Department of Photonics, Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

Sensors (Basel, Switzerland)
|July 11, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a bi-direction free-space visible light communication (VLC) system using a light-diffusing optical fiber (LDOF) to support multiple mobile receivers. The system achieved 210 Mbit/s downlink and 850 Mbit/s uplink data rates.

Keywords:
laser diode (LD)light diffusing optical fiber (LDOF)light-diffusing optical fiber (LDOF)optical wireless communication (OWC)visible light communication (VLC)

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Area of Science:

  • Optical Communications
  • Wireless Networking
  • Photonics

Background:

  • Visible Light Communication (VLC) systems offer high bandwidth potential but often face challenges with receiver mobility and signal distribution.
  • Existing VLC infrastructure can be complex to deploy and lacks flexibility for dynamic user environments.
  • The integration of optical fibers with free-space optics presents an avenue for enhanced signal delivery and coverage.

Purpose of the Study:

  • To propose and demonstrate a novel bi-direction free-space VLC system.
  • To enable support for multiple moveable receivers using a unique optical fiber.
  • To achieve high data rates in a flexible and robust VLC network architecture.

Main Methods:

  • A bi-direction free-space VLC system was designed and implemented.
  • A light-diffusing optical fiber (LDOF) was utilized as a re-transmitting optical antenna.
  • Free-space transmission was employed for both downlink (DL) and uplink (UL) signal paths between the central office (CO) and the LDOF.

Main Results:

  • The LDOF effectively re-transmitted the DL signal to multiple moveable receivers.
  • Demonstrated a 100 cm free-space transmission link between the CO and the LDOF.
  • Achieved 210 Mbit/s DL and 850 Mbit/s UL data rates, meeting the pre-forward-error-correction bit error rate (pre-FEC BER) threshold of 3.8 × 10-3.

Conclusions:

  • The proposed LDOF-based VLC system successfully supports multiple moveable receivers.
  • The system demonstrates a viable approach for flexible and high-speed wireless communication using visible light.
  • This technology holds promise for future mobile communication networks requiring adaptable and efficient data transmission.