abstract
In response to the soaring demand for wireless internet due to the proliferation of mobile devices, the radio-frequency spectrum is severely congested. To address this issue, emerging optical transmission technologies, notably visible light communications (VLC), are gaining traction. VLC offers high bandwidth, immunity to electromagnetic interference, and combines lighting with wireless communication. This study delves into examining the performance of a high-capacity VLC system, using a setup that multiplexes and diffuses light from red, green, and blue (RGB) laser diodes (LDs) to generate white light. We achieved impressive bit rates of up to 38 Gbit/s over 1 m in an unconstrained lighting environment. However, when meeting lighting requirements, the net bit rate ranged between 27-33 Gbit/s. By adjusting the bias current of the LDs, we optimized the color combination within a range of 2500-6500 K correlated color temperature, catering to various scenarios. Additionally, our experimental results demonstrated that the optimized RGB-VLC link effectively covers a wide 40 cm diameter area while sustaining multi-Gigabit data rates within a 30(degrees) field-of-view.
subject category
Engineering; Optics; Telecommunications
authors
Loureiro, PA; Fernandes, GM; Correia, SFH; Ferreira, RAS; Guiomar, FP; Monteiro, PP
our authors
Sandra Filipa Henriques Correia
Assistant ProfessorProjects
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
This work was supported in part by FEDER, through the CEN-TRO 2020 Program, under Project ORCIP CENTRO-01-0145-FEDER-022141,in part by FCT/MCTES through project OptWire under Grant PTDC/EEI-TEL/2697/2021, in part by H2020-EU.1.3 Program through Project DIOR under Grant 101008280, and in part by the CICECO-Aveiro Institute of Materials under Grant UIDB/50011/2020 and Grant UIDP/50011/2020, and Grant LA/P/0006/2020. The work of Pedro A. Loureiro was supported by FCT, under code 2021.06736.BD. The work of Gil M. Fernandes was supported by FCT through Individual Scientific Employment Program Contract under Grant 2022.07168.CEECIND. The work of Sandra F. H. Correia was supported by FCT through Individual Scientific Employment Program Contract under Grant 2022.03740.CEECIND.