The LC connector features a small 1. 25 mm ceramic ferrule and a latch-style locking mechanism. This compact design is ideal for high-density fiber patch panels, SFP modules, and data centers. Due to its small footprint, LC connectors have become the most widely used fiber optic. A fiber optic connector is a mechanical device used to align and join optical fibers, enabling light to pass through with minimal loss. Fiber optic connectors may look small. Lucent Connectors, typically known as LC connectors, were developed by Lucent Technologies as a small form factor solution to fiber optic connections.