Beyond 25 Gbps optical wireless communication using wavelength division multiplexed LEDs and micro-LEDs

In this Letter, high-speed optical wireless communication (OWC) with three light-emitting diodes (LED) and five micro-LEDs (mu LEDs) is proposed as a proof-of-concept wavelength division multiplexing (WDM) system. It covers a wide spectrum from deep ultraviolet (UV) to visible light and thus could offer both visible light communication (VLC) and UV communication simultaneously. An aggregated data rate of up to 25.20 Gbps over 25 cm free space is achieved, which, to the best of our knowledge, is the highest data rate for LED-based OWC ever reported. Among them, the five mu LEDs offer a data rate of up to 18.43 Gbps, which, to the best of our knowledge, is the highest data rate for mu LED-based OWC so far. It shows the superiority and potential of mu LEDs for WDM-OWC. Additionally, a data rate of 20.11 Gbps for VLC is achieved. (C) 2022 Optica Publishing Group

Automated summary

This Letter proposes a high-speed optical wireless communication system based on LEDs and micro-LEDs, achieving simultaneous visible light communication and UV communication using wavelength division multiplexing technology. The system achieves high data transmission rates and demonstrates the advantages and potential of micro-LEDs in optical wireless communication.