400G-LR4 QSFP56-DD based on EML, 8 channels of 50G-PAM4 electrical and 4 channels of 100G-PAM4 optical parallel lanes,duplex LC connector, 10km maximum reach via single mode fiber,case temperature range of 0℃-70℃, comply with IEEE 802. 3df-2024 protocol and 400GAUI-8 standard. The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength per lane. View our full range of high-speed. When this type of optical module is used to interconnect with WDM equipment, the protection switching time of WDM client-side 1+1 protection is greater than 50 ms. It is being developed by the QSFP-DD MSA as a key part of the industry's effort to enable high-speed solutions. When combined with higher transmission rates per electrical interface (28 Gbps to 56 Gbps to 112 Gbps), QSFP-DD optical transceivers can. dule retimed interface (see IEEE 802. Each optical lane is. QSFP-DD (Quad Small Form Factor Pluggable-Double Density) is a new modular connector system that utilizes a dual-density, four-channel, small, hot-swappable optical module package.
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