Real-time 10,000 km Straight-line Transmission using a Software-defined GPU-Based Receiver

TL;DR

This paper demonstrates real-time ultra-long-distance optical transmission over 10,000 km using a GPU-based software-defined receiver with advanced modulation formats, achieving high data integrity over unprecedented distances.

Contribution

It introduces a GPU-implemented software-defined receiver capable of real-time detection of high-order QAM signals over 10,000 km, a significant advancement in optical communication technology.

Findings

Successful real-time transmission over 10,000 km.

High-order QAM signals transmitted over thousands of kilometers.

GPU-based receiver enables flexible, software-defined detection.

Abstract

Real-time 10,000 km transmission over a straight-line link is achieved using a software-defined multi-modulation format receiver implemented on a commercial off-the-shelf general-purpose graphics processing unit (GPU). Minimum phase 1 GBaud 4-ary quadrature amplitude modulation (QAM) signals are transmitted over 10,000 km and successfully received after detection with a Kramers-Kronig (KK) coherent receiver. 8-, 16-, 32-, and 64-QAM are successfully transmitted over 7600, 5600, 3600, and 1600 km, respectively.