About ALLEGRO ‘Agile ultra low energy secure networks’
ALLEGRO aims at designing and validating a novel end-to-end sliceable, reliable, and secure architecture for next-generation optical networks, achieving high transmission/switching capacity
- with 10 Tb/s for optoelectronic devices and 1 Pbt/s for optical fiber systems
- low power consumption/cost
- with > 25% savings
- and secure infrastructures and data transfers.
The architecture relies on key enabling innovations:
- smart, coherent transceivers exploiting multi-band & multi-fiber technologies for P2P and P2MP applications, based on e.g., high-speed plasmonic modulators/photodetectors and programmable silicon photonic integrated waveguide meshes;
- loss-less, energy-efficient transparent photonic integrated optical switches, eliminating OEO conversions, e.g., with on-chip amplification in the O-band for datacom applications;
- a consistent approach to security, in terms of functional/ protocol architectures and communications, further improving QKD systems, enabling optical channel co-existence and researching on quantum-resistant (post-quantum) cryptography, developing systems based on physically unclonable functions; and
- a scalable AI/ML assisted control and orchestration system, responsible for autonomous networking, dynamic and constrained service provisioning, function placement and resource allocation, leveraging devices increasing programmability and overall network softwarization.
To achieve the target objectives and KPIs, ALLEGRO has defined a clear methodology ending in ambitious demonstrators. The consortium includes a good balance of industry and research/academia with know-how in complementary fields.
The results of ALLEGRO will be disseminated in leading conferences, events, and high-impact journals. They will have a concrete and measurable economic and social impact, contributing towards achieving key European objectives, reinforcing European leadership and digital sovereignty in the ongoing digital and green transition.
Project News
New Publication – Performance Evaluation of a Light-Tree P2MP Metro-Core Architecture in Correlated Traffic Scenarios
We are excited to share our publication titled “Performance Evaluation of a Light-Tree Point-to-Multipoint Metro-Core Architecture in Correlated Traffic Scenarios”, presented at ONDM 2025.This work investigates how a light-tree P2MP architecture (using coherent P2MP...
New Conference Paper: Model Predictive Control Scheduling for Extended Access Metro P2MP Optical Networks
We are pleased to share our latest contribution:“Model Predictive Control Scheduling for Extended Access Metro P2MP Optical Networks”, presented at ICTON 2025.This paper introduces a scheduling framework based on model predictive control (MPC), targeting...
New Conference Paper: Direct Intensity & Phase Modulation for QKD Transmitter via Optical Injection Locking
We are excited to announce our latest publication: “Direct Intensity and Phase Modulation for QKD Transmitter via Optical Injection Locking”, presented at Europe-EQEC 2025.This work presents a transmitter design that directly implements both intensity and phase...
New Publication: Enhancing VCSEL-based BVT Performance Using Optical SSB Filter & Time-Delay Neural Network
We are proud to announce our latest contribution: “Performance Improvement of Directly Modulated VCSEL-based BVT via Optical SSB Filter and Time-Delay Neural Network”, presented at IEEE ICMLCN 2025.In this work we demonstrate how a broadcast-and-select transmitter...
New Publication: Analytical Model for Filtering Impact Estimation in Coherent Optical Systems
We are pleased to share our latest research, “Analytical Model for Filtering Impact Estimation of Coherent Systems with Finite-Length Equalizer”, presented at ONDM 2025.In this work: We derive an analytical model that captures how cascaded filtering and finite-tap...
New Conference Publication: Anomaly Classification in CV-QKD over DWDM
We are excited to share our recent contribution, “Anomaly Classification in CV-QKD over DWDM: Differentiating System Faults from Quantum Attacks”, presented at ICTON 2025 (July 2025, Barcelona).In this paper we address the operational challenge of distinguishing...
New Conference Paper – ML-Driven Attack & Fault Classification in CV-QKD Systems
We are proud to announce the publication of our paper “Machine Learning-Driven Attack and Fault Classification in CV-QKD Systems After Anomaly Detection”, presented at ONDM 2025. The work explores the use of machine-learning techniques for classifying both system...
New Publication: SDN-Enabled CV-QKD & Classical Channel Coexistence in DWDM Networks
We are pleased to announce the publication of our latest study, “SDN-enabled CV-QKD and classical channels coexistence: key insights for dense wavelength division multiplexing”, in J. Opt. Commun. Netw. (Vol. 17, pp. B28–B37, 2025).In this paper, we present a...
New Publication: QKD Integration for Quantum-Secure Data Centre Connectivity
We are pleased to share our invited contribution at ICTON 2025:Michela Svaluto Moreolo, Masab Iqbal, Laia Nadal, José Manuel Rivas-Moscoso, Antonio Melgar, Antonio Pastor, Rafael Canto & Sebastián Etcheverry“Enabling Quantum Secure Data Center Connectivity through...
New Article: Integrating CV-QKD in Flexible Optical Networks
We are pleased to announce our publication:Michela Svaluto Moreolo, Masab Iqbal, Arturo Villegas, Ramon Casellas, Laia Nadal Reixats & Raul Muñoz,“Continuous Variable QKD in Flexible Optical Networks for Future Quantum Secure Connectivity,” J. Opt. Commun. Netw.,...