Co-propagation of 6 Tb/s (60*100Gb/s) DWDM & QKD channels with ~17 dBm aggregated WDM power over 50 km standard single mode fiber

TL;DR

This paper demonstrates the simultaneous transmission of high-power classical data channels and a quantum key distribution channel over 50 km of standard single mode fiber, introducing a new metric for co-propagation efficiency.

Contribution

It presents the first experimental demonstration of co-propagating 6 Tb/s classical channels with a QKD channel over 50 km of fiber, along with a novel metric for evaluating co-propagation efficiency.

Findings

Successful co-propagation over 50 km of SSMF

Introduction of a new metric for co-propagation efficiency

Maintained quantum channel integrity with high-power classical channels

Abstract

We report the co-propagation, over 50 km of SSMF, of the quantum channel (1310 nm) of a QKD system with ~17 dBm total power of DWDM data channels (1550 nm range). A metric to evaluate Co-propagation Efficiency is proposed.