SDN-enabled CV-QKD and Classical Channels Coexistence: Key Insights for DWDM Networks

We are pleased to announce the publication of our article:

SDN-enabled CV-QKD and Classical Channels Coexistence: Key Insights for Dense Wavelength Division Multiplexing
Masab Iqbal et al.
Journal of Optical Communications and Networking (JOCN), Volume 17, Pages B28–B37, 2025

Overview

As optical networks evolve toward higher capacity and enhanced security, the integration of quantum key distribution (QKD) with classical transmission becomes a critical challenge. This work investigates the coexistence of continuous-variable QKD (CV-QKD) and classical DWDM channels in SDN-controlled flexible optical networks.

Key Highlights

  • An SDN-enabled control framework for joint management of quantum and classical channels
  • Detailed analysis of interference, spectral spacing, and power constraints in DWDM environments
  • Experimental insights and design recommendations for dense wavelength coexistence
  • Practical guidance for deploying CV-QKD in real operator networks

This study contributes actionable knowledge for quantum-secure optical transport, bridging the gap between theoretical QKD models and deployable network architectures.

📄 Access the full article:
https://opg.optica.org/jocn/abstract.cfm?uri=jocn-17-6-B28