In this guide, we provide a comprehensive, practical overview of 100G QSFP28 modules, covering their working principles, module types, key specifications, typical applications, and a step-by-step selection framework to help you make confident, informed decisions for your network. QSFP28 transceivers combine a compact form factor with high port density, supporting applications from short-reach data center interconnects to long-haul metro and telecom networks. However, with multiple module types—such as SR4, LR4, CWDM4, and ZR4 —each optimized for different distances, fiber. Among the various 100G modules available, the QSFP28 optical transceiver stands out as the preferred choice due to its compact size and low power consumption. In our previous post, we provided an in-depth analysis of the 100G LR4 transceiver. 3™-2022 100GBASE-ZR standard, ensuring interoperability with other solutions. This form factor is currently the industry workhorse for high-speed Ethernet connectivity. However, choosing the wrong interface type. 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. Q28DSLOLQE010CGP QSFP28 LR4 1310nm 10km LC DUAL RATE 100GbE/OTU4 Single Mode EML+PIN The 100G QSFP28 LR4 optical transceiver transmits data over single mode fibre at a distance of up to 10km. The transceiver operates on 4 wavelengths and works in point-to-point scenario.
