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400G QSFP-DD
The 400G QSFP-DD (Quad Small Form-factor Pluggable Double Density) transceiver represents the pinnacle of high-bandwidth interconnect technology, designed to meet the skyrocketing data demands of next-generation networks. These modules operate by utilizing eight lanes of high-speed electrical interfaces, effectively doubling the density of traditional QSFP connectors while maintaining backward compatibility with existing QSFP+ and QSFP28 systems. By leveraging advanced modulation techniques such as PAM4 (4-Level Pulse Amplitude Modulation), these transceivers convert electrical data into high-speed optical signals over fiber optic cables, enabling efficient data transmission at rates up to 400Gbps across varied distances, from short-reach intra-rack connections to long-haul data center interconnects.
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