AscentOptics’ 100G QSFP28 optical transceivers in the QSFP ( Quad Small Form-Factor Pluggable ) form factor offer customers a wide variety of high-density and low-power 100 Gigabit Ethernet connectivity options for data centers, high-performance computing networks, enterprise core and distribution layers, and service provider applications. 100G QSFP28 optical module usually uses 4-channel optical signal and 4-channel NRZ electrical signal. Ascentopics provides a wide range of QSFP28 series products, including SR4 100m over multimode fiber, PSM4 for 500M transmission over single-mode fiber, and CWDM4, LR4, ER4, and ZR4, which reach up to 2KM, 10KM, 40KM, 80km, or even 100km over single-mode fiber. AscentOptics could also provide 100G SR BIDI and 100G SWDM4, which build links with LC connectors over multimode fiber.