26 Gbit/s LiFi system with laser-based white light transmitter

Changmin Lee, Mohamed Sufyan Islim, Sovan Das, Adrian Spark, Stefan Videv, Paul Rudy, Binith Shah, Melvin McLaurin, Harald Haas, James Raring

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
39 Downloads (Pure)


Wedemonstrate a high-speed light fidelity (LiFi) communication system deploying ultra-high brightness laser-based white light illumination sources in a surface mount device (SMD) packaging platform. The LiFi transmitter SMD source provides 450 lumens of white light output with a brightness of 1000 cd/mm2 in a dual wavelength configuration comprising blue and infrared (IR) emitting laser diodes within the SMD. First, we present high-speed data transmission beyond 25 Gbit/s over a 3 meter channel distance with the combined data rates from the blue and IR lasers in the single SMD. Next, we present a 2.8 Gbit/s data rate with the dual wavelength laser SMD light source using a side-emissive fiber as the transmitter. This work proves the viability of LiFi systems deploying laser-based white light sources operating at very high data rates with the visible light and communication signal delivered in conventional free-space transmission architectures along with novel configurations using side-emitting fibers.

Original languageEnglish
Pages (from-to)1432-1439
Number of pages8
JournalJournal of Lightwave Technology
Issue number5
Early online date13 Nov 2021
Publication statusPublished - 2 Mar 2022


  • emissive fiber
  • laser diode
  • light fidelity (LiFi)
  • modulation
  • optical communication
  • optoelectronics
  • solid-state lighting
  • surface mounting device (SMD)
  • visible light communication
  • wireless communication (VLC)


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