Datolink Ltd make high quality fiber optic patch cord, which provides low insertion loss, high return loss, low polarization effects which can provides excellent environmental stability for PM amplifer, fiber lasers and test instrumentation applications. LC stands for Lucent Connector. The LC is a small form-factor Fiber optic connector. The LC Connector uses a 1.25 mm ferrule, half the size of the ST. Otherwise; it is a standard ceramic Ferrule connector. The LC has good performance and is highly favored for single mode.