As optical networks evolve beyond the traditional C-band, power optimization becomes increasingly complex. The LOGO approach has been a reliable method for determining optimal signal launch power within the C-band. However, as we expand into multi-band transmission,...
As mobile transport networks evolve, the need for high-capacity, single-fibre bidirectional (Bi-Di) transmission links becomes increasingly critical to maintain strict timing and synchronization requirements. In the ALLEGRO project, we are pushing the boundaries of...
Managing EDFA amplifiers in a DWDM network is a complex challenge. The choice between constant gain mode and constant power mode directly impacts power stability, OSNR, and overall network performance. 🔹 Key Considerations: ✅ Constant Power Mode – Preferred in highly...
Traditional ROADMs and WSSs face limitations in efficiently supporting Point-to-Multipoint (P2MP) optical networks. To overcome these challenges, we propose a modified Broadcast-and-Select (B&S) ROADM architecture that improves spectrum efficiency and minimizes...
PON has become the gold standard for fixed optical access, with over a billion terminations deployed globally. As ITU-T and IEEE drive new standards to push bit rates even further, the discussion now includes 200 Gb/s per wavelength using PM-QAM and coherent...
In the ALLEGRO project, we've explored how pluggable EDFAs—low-cost amplifiers primarily designed for DCI applications—can be leveraged in multi-span DWDM networks despite their limitations. 🔍 Challenges with Pluggable EDFAs:✔️ Lack of variable gain operation with...
Can optical fibres double as seismic sensors? Yes! Our work within the ALLEGRO project explores how state of polarization (SOP) variations in fibre-optic networks can be leveraged for earthquake detection and early warning systems. 📡🌎 🔬 How it Works:Using commercially...
In the ALLEGRO project, we’ve taken a step forward in ML-driven failure management by developing a NN-based soft failure identifier that maintains high accuracy while significantly reducing complexity. 🔍💡 📌 Why is this important?Most ML-based failure detection models...
With the ever-growing demand for Internet traffic, driven by 5G, cloud services, and online applications, metropolitan optical networks are evolving to meet these increasing capacity needs. However, as networks rely more on coherent optical technologies and...
As part of our ongoing work in the ALLEGRO project we've been leveraging system-level modeling to analyze and compare the performance of Single Carrier (SC) and Discrete Spectrum Carrier Multiplexing (DSCM) systems under narrow filtering constraints. 🔎 Key Insights:✅...