212Gbps high-power EML for 800G artificial intelligence optical transmissions

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Jack Huang
HsiangSzu Chang
Yi-Ching Hsu
Alex Chiu
ZiHan Fang
Chun-Yen Yu
Sam Hsiang



We present a high-power, high-speed 212Gbps four-level Pulse Amplitude Modulation (PAM4) Electro-absorption Modulated Laser (EML) designed for 800G LR4 optical transmission and Artificial Intelligence (AI) applications. The Lan wavelength division multiplexing (LWDM) EML channels, operating at wavelengths of 1295.56 nm, 1300.05 nm, 1304.58 nm, and 1309.14 nm in 800G LR4 optical transceivers, exhibit clear eye openings even after 10km of transmission. Our 212Gbps PAM4 LWDM EMLs demonstrate high bandwidth, high extinction ratio, high power, and high energy efficiency, making them suitable for 10km transmission and environmentally friendly connectivity.


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Jack Huang, HsiangSzu Chang, Yi-Ching Hsu, Alex Chiu, ZiHan Fang, Chun-Yen Yu, & Sam Hsiang. (2024). 212Gbps high-power EML for 800G artificial intelligence optical transmissions. Compendium of Optics and Photonics, 001–005. https://doi.org/10.17352/cop.000001

Copyright (c) 2024 Jia-Sheng Huang J, et al.

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