Fiber optic connector refers to a detachable, movable and repeatedly inserted connecting device that connects one optical fiber to another, also known as optical fiber movable connector. It can realize low loss connection between optical fiber or between optical fiber and cable, and effectively reduce the influence of optical fiber connection on signal. The fiber optic connector is mainly composed of pin, connector body, optical cable and connecting device.
In terms of characteristics, the fiber optic connector needs to meet many requirements, including the insertion loss of the optical fiber transceiver is less than 0.5dB, the return loss is more than 25dB; the tensile strength of the fiber optic connector is more than 90N; the operating temperature range of the optical fiber transceiver is - 40 ℃ ~ 70 ℃, and the number of plugging and plugging is more than 1000, etc.
According to the different transmission medium, the fiber optic connector can be divided into single-mode fiber optic connector and multi-mode fiber optic connector; according to the different connector structure, it can be divided into LC fiber optic connector, SC fiber optic connector, FC fiber optic connector, St fiber optic connector, MPO / MTP fiber optic connector, MT-RJ fiber optic connector, Mu fiber optic connector, DIN fiber optic connector, E2000 fiber optic connector, etc.
LC fiber optic connector is developed by Bell research lab. the size of its pin and sleeve is 1.25 mm, which is half of SC / FC optical fiber transceiver. It adopts the way of socket (RJ) latch fastening, and is generally used in high-density optical fiber distribution frame.
SC fiber optic connector is developed by NTT company of Japan. Its shell is rectangular, and the pin size is 2.5mm. It adopts the fastening method of plug pin and bolt, and the insertion method is simple and convenient.
FC fiber optic connector is also developed by NTT company of Japan. The pin size is 2.5mm. However, the pin of FC fiber optic connector is relatively short. The surface of FC fiber optic connector is fastened by metal sleeve and screw buckle. The biggest feature of this fiber optic connector is that it is not easy to fall off after installation.
MPO / MTP fiber optic connector is a kind of fiber optic connector specially made for multi-fiber ribbon cable. It has a variety of optical fiber models such as 4 / 6 / 8 / 12 / 24 cores. MPO / MTP fiber optic connector has the characteristics of small volume and many cores, which is generally used in high-density optical fiber links.
In the use of connector, it is very important to clean the end face of connector, so as to ensure the connector to maintain a better working state. There are two common cleaning methods for the end face of fiber optic connector: contact type and non-contact type. As an indispensable device in the generic cabling project, fiber optic connector, though small, has made great contribution to the whole network.