Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors
Farrell, Robert M.
Speck, James S.
Ooi, Boon S.
DenBaars, Steven P.
KAUST DepartmentPhotonics Laboratory
KAUST Grant NumberSB140014
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AbstractData 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 region.
CitationLee C, Shen C, Cozzan C, Farrell RM, Speck JS, et al. (2017) Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors. Optics Express 25: 17480. Available: http://dx.doi.org/10.1364/oe.25.017480.
SponsorsThis work was performed at the King Abdullah University of Science and Technology (KAUST) and UCSB and was supported by the KACST(SB140013)-KAUST(SB140014)-UCSB Solid State Lighting Program (SSLP) and the Solid State Lighting and Energy Electronics Center (SSLEEC). A portion of this work was done in the UCSB nanofabrication facility, part of the National Science Foundation (NSF) funded by Nanotechnology Infrastructure Network (NNIN) (ECS-0335765) and the UCSB Materials Research Laboratory (MRL) center facilities supported by the NSF MRSEC Program (DMR05-20415).
PublisherThe Optical Society