Alignment-Tolerant Fi-Wi-Fi Free-Space Optical Bridge

TL;DR

This paper presents a stable outdoor free-space optical link that uses modal split for downlink and uplink, eliminating the need for active beam tracking, and demonstrates duality with full-duplex transmission.

Contribution

It introduces a novel alignment-tolerant FSO link with modal split, showing long-term stability and duality with directional split without active beam tracking.

Findings

Long-term stable outdoor FSO link achieved

Modal split effectively replaces active beam tracking

Duality between modal and directional split demonstrated

Abstract

We demonstrate a simplified out-door FSO link with modal split for down-/uplink and confirm its long-term stability without active beam tracking. We further prove the duality of modal and directional split through penalty-free full-duplex transmission.