The FC connector or ferrule connector is synthesized for singlemode fiber optic optics and has become very popular because of its reliability. Answer first: select ST, SC, FC, LC, MPO/MTP, or another connector from the equipment interface, ferrule, fiber type, polish, polarity, density, insertion-loss and reflectance budget, handling, inspection, cleaning, and lifecycle—not popularity alone. Fiber optic patch cables are short-run assemblies—typically under 10 meters—with a finished connector on each end. They bridge the gap. While the small size of fibre optic connectors does not mean they play a minor role, the type of connector you use affects the overall efficiency of light transmission across the fibre network.