The QSFP-40000-SR8 is a parallel 8x 50Gb/s Quad Small Form-factor Pluggable Double Density (QSFP-DD) optical transceiver. It provides increased port density and total system cost savings. The QSFP-DD format achieves data speeds of 400G full duplex. The optical signals back into electrical signals. Optical modules are classified by their packaging forms, with common types including SFP, SFP+, SFP28, QSFP+, QSFP28, QSFP56, QSFP-DD, QSFP112, and. Among these advancements, the 400G QSFP-DD SR8 optical module stands out as a pivotal solution for short-reach data center interconnects. The optical module provides point-to-point 400 Gigabit Ethernet. PAM4 (4-Level Pulse Amplitude Modulation): This is the predominant modulation technique used in 400G modules.
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