Achieving 70 Gb/s Over A VCSEL-Based Optical Wireless Link Using A Multi-Mode Fiber-Coupled Receiver

TL;DR

This paper demonstrates a high-speed optical wireless communication system using a low-power VCSEL and multi-mode fiber coupling, achieving over 70 Gb/s data rates for next-generation indoor LiFi applications.

Contribution

It introduces a novel VCSEL-based OWC system with multi-mode fiber coupling that surpasses 70 Gb/s, enabling ultra-high capacity LiFi links with low power consumption.

Findings

Achieved over 70 Gb/s data rate with low optical power.

Validated the feasibility of ultra-high speed indoor OWC systems.

Utilized a fiber-coupled receiver to avoid bandwidth limitations.

Abstract

In this paper, we demonstrate a laser-based optical wireless communication (OWC) system employing a 940 nm single-mode (SM) vertical cavity surface emitting laser (VCSEL) and a multi-mode (MM) fiber-coupled receiver, achieving a record data rate beyond 70 Gb/s, while the optical transmit power is below 5 mW. The use of a high speed fiber-optic photoreceiver avoids limiting the communication bandwidth by the receiver, enabling ultra-high capacity and energy-efficient light fidelity (LiFi) links to unlock new applications. This work experimentally validates the feasibility of ultra-high speed indoor OWC systems using a single low-power and low-cost VCSEL for next-generation LiFi connectivity.