New Paper Published in IEEE Photonics Technology Letters

We are excited to announce the publication of our latest article, “2×53 Gbit/s PAM-4 Transmission Using 1.3 μm DML with High Power Budget Enabled by Quantum-Dot SOA” in IEEE Photonics Technology Letters, Volume: 37, page 1 (DOI: 10.1109/LPT.2024.3504841). This research is a collaborative effort between Dublin City University, Eblana Photonics Ltd., and Innolume GmbH.    

The study explores the efficiency of directly modulated lasers (DMLs) operating at a 1.3 μm wavelength in conjunction with quantum-dot semiconductor optical amplifiers (SOAs) for next-generation passive optical networks. It successfully demonstrates 2×53 Gbit/s transmission using PAM-4 modulation over 20 km of single-mode fiber.

The research compares the performance of quantum-well-based and quantum-dot-based SOAs under wavelength-division multiplexing (WDM) conditions. Notably, the quantum-dot SOAs, when paired with a 30-tap T-spaced equalizer, achieve an impressive total power budget of 34 dB per WDM channel. These results underscore the significant potential of this approach for enabling high-speed, efficient optical networks in the future.

We invite you to explore this groundbreaking work in the published article.