11 February 2025

A New Study by McGill University

Which Amplifier is the Best for O-Band Data Transmission? A New Study by McGill University in collaboration with Innolume GmbH.

We are happy to announce the publication of the article, “Performance and Characterization Comparison of QD SOA, QW SOA, Bulk SOA, and PDFA for Multi-Tbps O-Band WDM Links,” in the prestigious IEEE Journal of Lightwave Technology (DOI: 10.1109/JLT.2024.3509402). This research was a collaborative effort between McGill University together with Innolume GmbH.

The paper provides a comprehensive comparison of different types of semiconductor optical amplifiers (SOAs) and fiber amplifiers for use in intensity-modulation/direct-detection (IM/DD) and coherent transmission systems at the multi-terabit-per-second data rates required for next-generation optical transceivers. The performance analysis covers both single-wavelength and wavelength-division multiplexing (WDM) configurations.

The findings reveal that quantum dot (QD) SOAs outperformed all other amplifiers, including PDFA, in both IM/DD and coherent transmission links. Remarkably, the Innolume QD SOA was the only amplifier capable of achieving 1.6 Tbps for coherent transmission under SD-FEC thresholds over a 10 km distance. This outstanding performance highlights the superiority of QD SOAs, driven by their high saturation output power, making them ideal for high-capacity optical networks.

These results emphasize the transformative potential of QD SOAs for supporting next-generation optical networks in both IM/DD and coherent systems across single and multiple wavelengths.

Which Amplifier is the Best for O-Band Data Transmission

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