Generic Compatible 400GBASE-ER4 QSFP-DD PAM4 LWDM4 1310nm 40km SMF Duplex LC DOM/DDM Optical Transceiver Module

Generic Compatible 400G QSFP-DD ER4 PAM4 4 LWDM Lanes MUX/DEMUX design Optical Transceiver Module ( Duplex LC 40km SMF with FEC DDM)

400G QSFP-DD ER4 is a 400Gb/s Quad Small Form Factor Pluggable Dual Density (QSFP-DD) optical module designed for long-haul solutions. The module converts eight channels of 50Gb/s (PAM4) electrical input data into four channels of LAN-WDM optical signals and multiplexes them into a single channel for 400Gb/s optical transmission. Conversely, on the receiver side, the module demultiplexes the 400Gb/s optical input into 4-channel WDM optical signals and converts them into 8-channel 50Gb/s (PAM4) electrical output data. The central wavelengths of the four LAN WDM channels are 1295.56, 1300.05, 1304.58, and 1309.14 nm. In order to minimize optical dispersion during transmission, the module must use single-mode fiber (SMF), which is used in data center interconnections, optical backbones, and other scenarios requiring high-performance network connectivity for high-speed, long-distance transmission. Scenarios.