Heterogeneously Integrated InP Electro-Absorption Modulator for beyond 300 Gb/s Optical Links
Journal of Lightwave Technology
2025
Armands Ostrovskis,
Krzysztof Szczerba,
Toms Salgals,
Erik Norberg,
Michael Koenigsmann,
John Sonkoly,
Kristaps Rubuls,
Han Yun,
Benjamin Kruger,
Molly Piels,
Arvīds Sedulis,
Fabio Pittala,
Sandis Spolītis,
Markus Gruen,
Hadrien Louchet,
Robert Jahn,
Kazuo Yamaguchi,
Vjačeslavs Bobrovs,
Robert Guzzon,
Oskars Ozoliņš
The recent AI boom requires more focus on energy-efficient and scalable optical interconnects. Silicon Photonics is enabling technology to satisfy growing demand. However, the lack of lasers and high-performance modulators hinders wide-scale adoption. Therefore, we present a heterogeneously integrated Indium Phosphide electro-absorption modulator with Silicon waveguides. We demonstrate up to 256 Gb/s on-off keying, 340 Gb/s 4-level pulse amplitude modulation, 375 Gb/s 6-level pulse amplitude modulation, and 360 Gb/s 8-level pulse amplitude modulation transmission over 500 m and 6 km of single-mode fiber with performance satisfying requirements of 6.25% overhead hard-decision forward error correction threshold of 4.5×10-3. Additionally, we investigate the modulator at 200 Gb/s per lane scenarios, demonstrating excellent performance with a simple seven-tap feed-forward equalizer.
Keywords
200Â Gb/s per lane; electro-absorption modulator; heterogeneous integration; optical interconnects; silicon photonics
DOI
10.1109/JLT.2025.3526822
Hyperlink
https://ieeexplore.ieee.org/document/10829959
Ostrovskis, A., Szczerba, K., Salgals, T., Norberg, E., Koenigsmann, M., Sonkoly, J., Rubuls, K., Yun, H., Kruger, B., Piels, M., Sedulis, A., Pittala, F., Spolītis, S., Gruen, M., Louchet, H., Jahn, R., Yamaguchi, K., Bobrovs, V., Guzzon, R., Ozoliņš, O. Heterogeneously Integrated InP Electro-Absorption Modulator for beyond 300 Gb/s Optical Links. Journal of Lightwave Technology, 2025, Vol. 43, pp.1-11. ISSN 0733-8724. e-ISSN 1558-2213. Available from: doi:10.1109/JLT.2025.3526822
Publication language
English (en)