Quantum Limits on the Capacity of Multispan Links with Phase-Sensitive Amplification

TL;DR

This paper investigates the maximum data transmission capacity of long-distance optical communication channels employing quantum-limited phase-sensitive amplifiers, considering various detection methods and power constraints.

Contribution

It provides a theoretical analysis of the ultimate capacity limits of multispan optical links with phase-sensitive amplification under quantum constraints.

Findings

Derived capacity bounds for long-haul optical channels with phase-sensitive amplification

Compared conventional and generalized detection scenarios

Identified the impact of quantum-limited amplification on channel capacity

Abstract

The capacity of a linear attenuating optical channel with the signal regenerated using quantum-limited phase-sensitive amplifiers is analyzed for conventional and generalized detection scenarios. The continuous model of distributed amplification determines the attainable capacity for long-haul links under the total power constraint.