Hybrid LED-laser transmitter for colour-tunable gigabit-per-second class indoor visible light communication

Faheem Ahmad; Varun Raghunathan

doi:10.1117/12.2651054

15 March 2023 Hybrid LED-laser transmitter for colour-tunable gigabit-per-second class indoor visible light communication

Faheem Ahmad, Varun Raghunathan

Author Affiliations +

Proceedings Volume 12429, Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII; 124290Z (2023) https://doi.org/10.1117/12.2651054
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

In this paper we demonstrate a LED-Laser hybrid transmitter to be used for colour-tunable, gigabit-per-second indoor visible light communication link. The hybrid transmitter consists of a white LED ring combined with a blue Laser diode incident on the diffuser surface which allows simultaneous control of the colour mixing and data communication performance. We explore colour tuning of the illumination light spot at the receiver by changing the transmitter lens position relative to the diffuser. We also demonstrate visible light communication at 1 Gbps data-rate using on-off modulated date for a link length of 2 meter. Due to beam spread from the diffusive surface, the hybrid transmitter also supports off-axis beam coverage across 40 cm diameter with bit-error rate below the forward-error correction (FEC) limit.

Conference Presentation

Citation Download Citation

Faheem Ahmad and Varun Raghunathan "Hybrid LED-laser transmitter for colour-tunable gigabit-per-second class indoor visible light communication", Proc. SPIE 12429, Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII, 124290Z (15 March 2023); https://doi.org/10.1117/12.2651054

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