Compared to even a few decades back, communication has become a vital part of our lives. The world's social, economic and political system is dependent upon its ability to communicate and transmit both voice and data information. Networks of optical fiber span continents and circle the globe making this communication possible. Rapid advances in fiber optics technology have made traditional wiring obsolete and unsuited for transferring complex data like images. Fiber optical connectors have replaced them, as they are small and transparent. They are as thin as wires and are able to transfer data via beams of light. Optical fiber is a long thin cylindrical fiber made from glass or plastic, as tiny as one tenth of a human hair. A standard telecom optical fiber is composed of three cylindrical layers, counted inside out: fiber core (diameter 8~10um), cladding (diameter 125um) and buffer coating (diameter 900um). Fiber optic connectors comprise of a ferrule, connector body, cable and coupling device. The end of the fiber is mounted on the end of ferrule. It is bored through the center thus cladding the fiber. This often induces scratches on the fiber. Some types of fiber optic connectors are biconic D4, ESCON, FC, FDDI, LC, loopback, MTP, RJ, MU, SC, SMAand ST. A fiber optic connector terminates at the end of a fiber optic cable and is used when you need a means to connect and disconnect the fiber cable quickly. A fiber splice would be used in a more permanent application. The connectors provide a mechanical connection for the two fiber cables and align both cores precisely so the light can pass through with little loss. There are many different types of connectors but many share similar characteristics. Many connectors are spring loaded. This will push the fiber ends very close to each other so as to eliminate airspace between them, which would result in higher dB losses. Everybody can click www.greentelftth.com to see more information.