Fiber connector can be used to become listed on optical fibers in which a connect/disconnect capability is required. Optical fibers terminate fiber-optic connections to fiber equipment or join two fiber connections without splicing. Fiber Optic Connector is an important components utilized in the fiber optic network. It is also the important thing part used in cat 7 cable and fiber optic pigtail. Fiber connectors are flexible, lower loss, less expensive, simpler to terminate or solved another perceived problem.

The basic connector unit is a connector assembly. Main components include a ferrule, sub-assembly body, cable, stress relief boot and connector housing. Modern connectors typically use a "physical contact" polish on the fiber and ferrule end. This can be a slightly curved surface, to ensure that when fibers are mated only the fiber cores touch, not the surrounding ferrules. Fiber-to-fiber interconnection can consist of a splice, a lasting connection, or perhaps a connector, which is different from the splice in its ability to be disconnected and reconnected.

Every fiber connection has two values:
Attenuation or insertion loss;
Reflection or return loss.

Optical fiber connectors were introduced with fiber optic technology within the 1980s. Fiber optic connector types are as various as the applications that they were developed. Different connector types have different characteristics, different advantages and disadvantages, and different performance parameters. Typical connectors are rated for 500-1,000 mating cycles. The main differences among kinds of connectors are dimensions and techniques of mechanical coupling. Generally, organizations will standardize on a single type of connector, depending on what equipment they commonly use. Different connectors are needed for multimode, and for single-mode fibers. Countless optical fiber connector types can be found, only several represent a lot of the market. Widely used fiber connectors range from the SC connector, LC connector, FC connector, ST connector, FDDI connector and E2000 connector.

LC connectors are sometimes called "Little Connectors".
MT-RJ connectors look like a miniature 8P8C connector--commonly (but erroneously) referred to as RJ-45.
ST connectors make reference to using a "straight tip", because the sides from the ceramic (which has a lower temperature coefficient of expansion than metal) tip are parallel--as opposed to the predecessor bi-conic connector which aligned as two nesting frozen treats cones would. Other mnemonics include "Set and Twist", "Stab and Twist", and "Single Twist", referring to how it's inserted (the cable is pushed into the receiver, and also the outer barrel is twisted to lock it into place). They are also referred to as "Square Top" because of the flat end face.
SC connectors, being square, have a mnemonic of "Square Connector", which many people believe to be the correct name, as opposed to the more official "Subscriber Connector". Other terms often used for SC connectors are "Set and Click" or "Stab and Click".

Features of good connector design:
Low insertion loss;
High return loss (low amounts of reflection at the interface);
Easy installation;
Low cost;
Reliability;
Low environmental sensitivity;
Simplicity of use.

Source from Basical Information Of Fiber Connector

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