LC stands for a type of optical connector of which the full name is Lucent Connector. It uses a retaining tab mechanism and the connector body. Understanding fiber connector types—SC/APC, SC/PC, LC/UPC, LC/APC, ST/PC, FC/PC, and FC/APC—is essential for selecting the right interface for your application. As a small-form-factor (SFF) interface, LC has become the default duplex connector in enterprise LANs, telco closets, and data-center topologies because it balances density, repeatability, and cost. They directly affect insertion loss, return loss, reliability, and long-term network stability. In this guide, we break down the most common optical fiber. Fiber optic connectors in SFP modules are the physical interfaces that connect the transceiver to fiber patch cables, enabling optical signal transmission between network devices. These modules connect network devices such as switches, routers, and media converters to fiber optic or copper networking cables.
[PDF Version]