This article explains what Duplex LC connectors are, how they work, the difference between single-mode and multimode use, how to choose and maintain them, and why they remain central to fiber network design. LC stands for Lucent Connector, named after the company that first. LC Multimode Fiber Optic Cable Assemblies are available at Mouser Electronics. Fiber optic connectors are used to the mechanical and optical means for cross connecting fibers. This connector landscape reflects how modern SFP deployments prioritize port density and. Fiber optic cable assembly quality hinges on selecting the right connector type—most commonly LC, SC, or ST—to match device ports and installation environment.