Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors
- 12 July 2017
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 25 (15), 17480-17487
- https://doi.org/10.1364/oe.25.017480
Abstract
Data communication based on white light generated using a near-ultraviolet (NUV) laser diode (LD) pumping red-, green-, and blue-emitting (RGB) phosphors was demonstrated for the first time. A III-nitride laser diode (LD) on a semipolar (2021) substrate emitting at 410 nm was used for the transmitter. The measured modulation bandwidth of the LD was 1 GHz, which was limited by the avalanche photodetector. The emission from the NUV LD and the RGB phosphor combination measured a color rendering index (CRI) of 79 and correlated color temperature (CCT) of 4050 K, indicating promise of this approach for creating high quality white lighting. Using this configuration, data was successfully transmitted at a rate of more than 1 Gbps. This NUV laser-based system is expected to have lower background noise from sunlight at the LD emission wavelength than a system that uses a blue LD due to the rapid fall off in intensity of the solar spectrum in the NUV spectral regionKeywords
Funding Information
- King Abdulaziz City for Science and Technology (KACST) (SB140013)
- King Abdullah University of Science and Technology (KAUST) (SB140014)
- National Science Foundation (NSF) (DMR05-20415, ECS-0335765)
- Solid State Lighting and Energy Electronics Center, University of California Santa Barbara (SSLEEC)
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