Fiber optics connectors have been developed by telecommunication companies over time, most of which were discarded, but a few prevailed and met the standards of the TIA Fiber Optic Connector Intermateability Standars (FOCIS).
Fortunately it seems that fiber optic connectors have become standardized over time and here we present the most used in today’s market:
Conector SC (Standard Connector)
The SC connector was developed in the 80s by the company Nippon Telegraph and telephone, in those times it was not used because it was considered very expensive. The SC connectors have an insertion loss of 0.25 dB and are rated to support 1000 disconnect connection cycles.
The SC connectors align the fibers precisely because of their ceramic splints, this connector is considered third generation and is widely used for data transmission and FTTH.
Conector LC (Lucent Connector)
The LC connector was created by Lucent Technologies and is widely used in single-mode applications since it can be easily connected. The LC connectors have 1.25mm ferrules that use a push and pull mechanism. They have a typical insertion loss of 0.10dB.
The small size of this connector allows to integrate it much better in electronics for telecommunications.
Conector ST (Straight Tip)
The ST connector was created by AT & T and has an insertion loss of 0.25dB and holds the fiber to a 2.5mm ferrule that are maintained with a bayonet anchoring system.
ST connectors are used in long distance applications such as campus or corporate networks and in military applications.
FC Conector (Ferrule Connector)
Designed by Nippon Telegraph and telephone, the FC is a connector with a 2.5mm ceramic ferrule that is held in place with a threaded system.
It is often used in high vibration environments because they are quite safe.