Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors

Changmin Lee, Chao Shen, Clayton Cozzan, Robert M. Farrell, James S. Speck, Shuji Nakamura, Boon S. Ooi, Steven P. DenBaars

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

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 region.
Original languageEnglish (US)
Pages (from-to)17480
JournalOptics Express
Volume25
Issue number15
DOIs
StatePublished - Jul 12 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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