QDD-800G-2xDR4 is a high-speed optical module based on PAM4 modulation technology. It complies with QSFP-DD MSA and IEEE 802. 3cu standards, supports a total transmission rate of 800Gbps, and integrates 2 independent 400G DR4 channels. The FS® 800GBASE Quad Small Form-Factor Pluggable (OSFP/QSFP-DD) portfolio offers customers a wide variety of high-density and low-power 800 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider. The OSFP/QSFP-DD 800G modules are our latest generation of 800G transceiver modules solution based on a OSFP/QSFP-DD form factor. OSFP/QSFP-DD 800G portfolio Mode Fiber (SMF) with MPO-16 connectors. 3, OIF-CMIS Amphenol's 800G QSFP-DD optical modules include 2xFR4(plus), 2xLR4, AOC, and AOC break-out series, which adopt LC or MPO optical ports and are compatible with IEEE802. It is mainly used in 800G Ethernet applications. Cisco QSFP-DD and OSFP 800G ZR/ZR+ digital coherent optics modules enable 800G traffic over amplified Dense Wavelength-Division Multiplexing (DWDM) links up to 120 km for 800ZR and over 1000 km for 800G ZR+. Each channel realizes 4-channel 100G (4x100G PAM4) data. The Cisco family of QSFP-DD800 modules leverages the cornerstone of high-speed, high-density pluggable form factors, QSFP.