System for achieving multiple bits per symbol in optical communications systems by combining...

Design of a low cost and power efficient 200/400 Gbps optical interconnect using DAC-less simplified PAM4 architecture

B Chowdhury, A Atieh, E Eyceyurt… - Journal of Optical …, 2024 - degruyter.com
Incoherent addition of three monochromatic laser sources is used to create four distinctive
power levels to match the profile of standard quaternary pulse amplitude modulation …
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