Abstract
Fifth-generation (5G)-based triple-wavelength visible laser light communication (VLLC)-underwater wireless laser transmission (UWLT) and laboratory-lighting convergent systems with 30 Gbit/s high aggregate transmission rates and 752 lux laboratory-level white-light illumination is successfully achieved. It exhibits a 5G-based triple-wavelength VLLC-UWLT and laboratory-lighting convergence using a red/green/blue (R/G/B) triple-wavelength as a presentation. RGB laser diodes with three-stage injection locking scheme modulate 5G millimeter-wave (MMW) 10-Gbit/s/24-GHz signals and afford high cumulative data rates with high-intensity laboratory-lighting. Over a cross-medium of 10-m VLLC with 8.8-m ocean water-air-ocean water links, satisfactorily low bit error rate (<3.8 × 10−3 forward error correction limit) with clear constellations and error vector magnitude (<12.5% required limit) are obtained. Through 3-m liquid light guide transmission, high-intensity white-lighting at laboratory-level is acquired. Such demonstrated 5G-based triple-wavelength VLLC-UWLT and laboratory-lighting convergent system shows promise as it develops the scenario realized by the 5G MMW signal through the VLLC with UWLT convergence, and also affords the dual-functionality of high-speed VLLC-UWLT transmission with high-intensity laboratory-lighting.
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