# Terabits without fibres

**Authors:** Zhenyu Xie, Qi-Fan Yang

PMC · DOI: 10.1038/s41377-025-01921-y · Light, Science & Applications · 2025-07-02

## TL;DR

A new free-space optical link using microcombs achieves an ultra-high data rate of 8.21 terabits per second.

## Contribution

The paper introduces novel beam stabilization and carrier phase retrieval methods for turbulence suppression in high-speed optical communication.

## Key findings

- The system achieved a record bandwidth of 8.21 Tbps in free-space optical communication.
- Novel techniques effectively suppressed turbulence and improved error correction.
- The results demonstrate the feasibility of microcomb-based coherent free-space links for high-speed data transmission.

## Abstract

A microcomb-based coherent free-space optical link achieves a record-high bandwidth of 8.21 Tbps. Novel beam stabilisation and carrier phase retrieval schemes are employed for turbulence suppression and error correction.

## Full-text entities

- **Chemicals:** 16QAM (-), Si3N4 (MESH:C032734)

## Full text

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## Figures

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Source: https://tomesphere.com/paper/PMC12219551