The fiber head is square, what kind of fiber is it?

　　The fiber optic head is a square head that generally refers to SC-type or LC-type fibers.

　　SC type fiber:

　　Joint shape: generous head, rectangular shell.

　　Structural features: The structure size of the pin and the coupling sleeve is the same as that of the LC type, but the plug-in pin-latch type fastening method is adopted, which does not require rotation and is easy to plug and unplug.

　　Application scenarios: strong pressure resistance, high installation density, more common in fiber optic transceivers.

　　LC type fiber:

　　Connector shape: SMall square head, slightly smaller than SC type.

　　Structural features: The use of modular jack (RJ) latch fastening, plug and play, can effectively reduce the use of space, suitable for high-density connections.

　　Application scenarios: It is more common in optical modules.

　　These two types of fiber optic connectors are common types of fiber optic interfaces on the market today, with their own characteristics and application scenarios. When choosing, it needs to be considered according to the specific use environment and needs.