What are the speed and modulation formats used by 800G OSFP/QSFP-DD modules?

all 800G modules make use of 8x electrical lanes in both directions, comprising 8 transmit lanes and 8 receive lanes. Each lane operates at a data rate of 100G PAM4, resulting in a total module bandwidth of 800Gb/s. Additionally, the optical output of all 800G transceivers comprises 8 optical waves, with each wave modulated at 100G PAM4 per lane.

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