Single-mode fiber modules in this assortment support data rates from about 1 Gbps to 10 Gbps, with a QSFP28 option supporting 100 Gbps, and transmission distances ranging from about 2 kilometers to 20 kilometers. Port types include duplex LC for separate transmit and receive fibers, simplex LC for bidirectional modules that use wavelength division, and MTP/MPO for higher-density 100 Gbps connections, so match the module to the switch port, fiber connector, and link requirements.

Choose a duplex single-mode fiber module when your link has two fiber strands, with one strand for transmitting and the other for receiving, and the network equipment supports a duplex LC connection. Choose a bidirectional single-mode fiber module when you need to send and receive data over one strand, and plan to use the matching wavelength-paired module at the other end.

Check whether the module requires duplex LC connectors, a simplex LC connector for bidirectional operation, or an MTP/MPO connector for select QSFP28 modules, and verify that the switch port supports the module type. Use compatible 9/125 µm single-mode fiber, such as OS1 or OS2, and match the cable’s wavelength, transmission distance, and connector configuration to the module.

Single-mode fiber modules support network expansion by providing pluggable transceivers for switch uplinks, switch-to-switch trunks, and other links that span commercial buildings, campuses, or longer distances. Options include SFP, SFP+, and QSFP28 formats with LC or MTP/MPO connections, allowing projects to match link speed, distance, port type, and fiber requirements as the network grows.