LC pigtails are short fiber optic cables which have one connector on their one end and a bare fiber on the other. The connector type most commonly used is the LC connector, known for its compact size and ease of use. Get the wrong connector type, the wrong polish, or skip proper fusion splicing technique—and you're looking at elevated signal loss, increased back reflection, and a. Fiber pigtails are an integral part of fiber optic networks, serving as the connection between the fiber cable and the network's equipment. The differences between LC, ST, and SC connectors are crucial for various applications in networking. LC pigtails come in simplex (single fiber) or duplex (two fibers) configurations.