Why are there two optical fiber LC interfaces?

　　The reason why there are two fiber LC interfaces is mainly related to the design and application requirements of LC connectors. The following is a detailed explanation of this phenomenon:

　　LC connector design

　　Structural features:

　　The full name of the LC interface is Lucent. Connector is a miniaturized fiber optic interface developed by Lucent. It uses a modular jack (RJ) latch mechaniSM, making it very convenient to connect and disconnect.

　　The design of the LC interface allows it to accommodate a single fiber and ensure precise alignment and fixation of the fiber through a specific structure.

　　Double core connector:

　　Ordinary LC dual-core connectors are usually composed of two LC single-core connectors through clips, each of which contains a single fiber.

　　There is also modified LC. Uniboot dual-core connector, which accommodates two optical fibers simultaneously in a 2.4mm or 3.0mm sheath, realizes the role of single tube and double core, significantly reducing the space requirements for wiring.

　　Application requirements

　　Two-way data transmission:

　　In fiber optic communication systems, data signals need to be transmitted in the optical network. Duplex LC couplers (also known as duplex LC adapters or duplex LC connectors) have two LC ports that can connect and couple two fiber optic jumpers simultaneously, thus enabling bidirectional data transmission.

　　Space utilization:

　　LC type connectors are widely used due to their smaller size. In high-density fiber optic patch panels or cabinets, duplex designs further improve space utilization, allowing more fiber optic connections to be realized in a limited space.

　　Performance requirements:

　　LC interfaces have a low insertion loss, typically about 0.1dB, which helps maintain signal strength over long distances. Therefore, in high-density and high-insertion-loss scenarios, LC interfaces are a better choice.

　　In summary, the reason why there are two fiber LC interfaces is that the LC connector is designed to accommodate a single fiber, and the two fibers are simultaneously connected and coupled through a duplex design to meet the two-way data transmission, space utilization, and performance requirements in fiber optic communication systems.