Which type of connector is commonly used with single-mode fibers?

The choice of SC (Subscriber Connector) and LC (Lucent Connector) as commonly used connectors for single-mode fibers is grounded in their design and application compatibility. Single-mode fibers are engineered for long-distance transmission by allowing only one mode of light to propagate through the fiber. This minimizes modal dispersion, enabling clearer signals over longer distances.

SC connectors are well-regarded for their push-pull design, which facilitates easy connection and disconnection while ensuring optimal performance and low insertion loss. The LC connector, notable for its compact size, is particularly favored for high-density applications and fits well in situations where space is limited. Both connectors are designed to align with the smaller core diameter of single-mode fibers effectively, which enhances performance.

In contrast, while ST (Straight Tip) and FC (Ferrule Connector) connectors can be used with single-mode fibers, they are less prevalent in contemporary installations, especially in environments that demand high-density fiber management. The MPO connector is generally associated with multi-mode fibers and is designed for higher density applications that require multiple fibers in a single connector. Thus, SC and LC connectors are more compatible with the performance requirements of single-mode fibers, making them the preferred choices in modern fiber optic installations.