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Hybrid LED-Laser Transmitter for Colour-Tunable Gigabit-persecond Class Indoor Visible Light Communication

Ahmad, F and Raghunathan, V (2023) Hybrid LED-Laser Transmitter for Colour-Tunable Gigabit-persecond Class Indoor Visible Light Communication. In: Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII 2023, 31 Jan - 2 Feb 2023, San Francisco.

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Official URL: https://doi.org/10.1117/12.2651054


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.

Item Type: Conference Paper
Publication: Proceedings of SPIE - The International Society for Optical Engineering
Publisher: SPIE
Additional Information: The copyright for this article belongs to SPIE.
Keywords: Bit error rate; Color; Error correction; Light emitting diodes, Blue laser diodes; Color mixing; Color tuning; Color-tunable; Data-communication; Forward error-correction; Gigabits per second; Laser transmitters; Simultaneous control; White LED's, Visible light communication
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 15 Jun 2023 09:47
Last Modified: 15 Jun 2023 09:47
URI: https://eprints.iisc.ac.in/id/eprint/82050

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