# 74.38 Tb/s Transmission Over 6300 km Single Mode Fiber with Hybrid EDFA/Raman Amplifiers

## TL;DR

This paper demonstrates a high-capacity optical fiber transmission system achieving 74.38 Tb/s over 6300 km using hybrid EDFA/Raman amplifiers, showcasing advanced techniques for ultra-long-distance data transmission.

## Contribution

The study introduces a novel combination of hybrid fiber spans and EDFA/Raman amplifiers to significantly increase transmission bandwidth and distance in optical fiber networks.

## Key findings

- Achieved 74.38 Tb/s over 6300 km of single-mode fiber.
- Established a continuous gain bandwidth of 10.8 THz.
- Demonstrated effective use of hybrid EDFA/Raman amplification.

## Abstract

Transmission of 306x35 GBd, dual polarization, 64-ary geometrically shaped channels over 90x70 km of SMF was demonstrated, achieving a net throughput of 74.38 Tb/s. A combination of hybrid fiber spans and EDFA/Raman amplifiers enabled a continuous gain bandwidth of 10.8 THz.