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100 Gbps Indoor Access and 4.8 Gbps Outdoor Point-to-Point LiFi Transmission Systems using Laser-based Light Sources

Cheng Cheng, Sovan Das, Stefan Videv, Adrian Spark, Sina Babadi, Aravindh Krishnamoorthy, Changmin Lee, Daniel Grieder, Kathleen Hartnett, Paul Rudy, James Raring, Marzieh Najafi, Vasilis K. Papanikolaou, Robert Schober, Harald Haas

Abstract

In this paper, we demonstrate the communication capabilities of light-fidelity (LiFi) systems based on highbrightness and high-bandwidth integrated laser-based sources in a surface mount device (SMD) packaging platform. The laserbased source is able to deliver 450 lumens of white light illumination and the resultant light brightness is over 1000 cd mm2. It is demonstrated that a wavelength division multiplexing (WDM) LiFi system with ten parallel channels is able to deliver over 100 Gbps data rate with the assistance of Volterra filter-based nonlinear equalisers. In addition, an aggregated transmission data rate of 4.8 Gbps has been achieved over a link distance of 500 m with the same type of SMD light source. This work demonstrates the scalability of LiFi systems that employ laserbased light sources, particularly in their capacity to enable highspeed short range, as well as long-range data transmission.

100 Gbps Indoor Access and 4.8 Gbps Outdoor Point-to-Point LiFi Transmission Systems using Laser-based Light Sources

Abstract

In this paper, we demonstrate the communication capabilities of light-fidelity (LiFi) systems based on highbrightness and high-bandwidth integrated laser-based sources in a surface mount device (SMD) packaging platform. The laserbased source is able to deliver 450 lumens of white light illumination and the resultant light brightness is over 1000 cd mm2. It is demonstrated that a wavelength division multiplexing (WDM) LiFi system with ten parallel channels is able to deliver over 100 Gbps data rate with the assistance of Volterra filter-based nonlinear equalisers. In addition, an aggregated transmission data rate of 4.8 Gbps has been achieved over a link distance of 500 m with the same type of SMD light source. This work demonstrates the scalability of LiFi systems that employ laserbased light sources, particularly in their capacity to enable highspeed short range, as well as long-range data transmission.
Paper Structure (7 sections, 10 equations, 16 figures, 3 tables, 1 algorithm)

This paper contains 7 sections, 10 equations, 16 figures, 3 tables, 1 algorithm.

Table of Contents

  1. Introduction
  2. LiFi use cases with High-speed parallel transmission and long range transmission
  3. Dual wavelength laser integrated surface mounting device
  4. High speed LiFi transmission with a single channel
  5. Over 100 Gbps LiFi transmission with parallel channels
  6. Long range LiFi transmission
  7. Conclusions

Figures (16)

  • Figure 1: High-speed and long range lifi use cases: (a) Indoor point-to-point links (b) Indoor point to multi-points links (c) Outdoor vehicle-to-vehicle links
  • Figure 2: (a) Schematic of the smd light source with two LDs operating for illumination and communication functionalities. (b) Cross-section schematic of the smd package.
  • Figure 3: Block diagram of a single link lifi system
  • Figure 4: Estimated snr of lifi link with 905 nm ld on subcarriers of various frequencies with and without nonlinear equaliser.
  • Figure 5: An example of the adaptive bit (top figure) and energy (bottom figure) loading results.
  • ...and 11 more figures