The 100GBASE-ER4L QSFP28 optical transceiver module is designed for use in 100GBASE Ethernet throughput up to 40km over single-mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors. Multiplexing and demultiplexing of. The 100G QSFP28 Single Mode Fiber (SMF) module is your essential high-speed, long-distance champion. This compact powerhouse solves critical connectivity challenges, enabling robust 100Gbps data transfer far beyond the reach of multimode optics. 652 single mode optical fibers (SMF). Unlike traditional dual-fiber optical modules that require two optical fibers for signal transmission and reception, it achieves bidirectional data transmission at.