Using four 25G wavelengths over a duplex single-mode fiber (LC connector), CWDM4 enables transmission distances up to 2 kilometers. Each wavelength supports 25Gbps, totaling 100Gbps. Application Scenarios: Ideal. 100G QSFP28 CWDM4 is a cost-efficient 100Gbps optical transceiver designed for links up to 2km over duplex single-mode fiber, making it one of the most practical choices for campus, data center, and metro interconnects. QSFP-100G-SR4-S supports 100GBase. Understanding the differences between SR4, LR4, CWDM4, SWDM4, BiDi, and Single Lambda modules is crucial for network architects aiming to balance performance, reach, and cost. Key Features and. This Multi-Source Agreement (MSA) defines 4 x 25 Gbps Coarse Wavelength Division Multiplex (CWDM) optical interfaces for 100 Gbit/s optical transceivers for Ethernet applications including 100 GbE. Forward error correction (FEC) is required to be implemented by the host in order to ensure reliable.
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