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Fiber Jumper Structure

- May 13, 2018 -

Fiber patch cords are used to make patch cords from devices to fiber cabling links. There is a thick protective layer, generally used in the connection between the optical transceiver and the terminal box, and is applied in some fields such as optical fiber communication system, optical fiber access network, optical fiber data transmission and local area network.

Optical fiber jumper (also known as fiber optic connector) refers to the connector of both ends of the optical cable is equipped with a connector plug, used to realize the optical path active connection, and one end is equipped with a plug is called pigtail. The Optical Fiber Patch Cord/Cable is similar to the coaxial cable except that it has no mesh shielding layer. The center is a light-transmitting glass core. In a multimode fiber, the diameter of the core is 50 μm to 65 μm, which is roughly equivalent to the thickness of human hair. The single-mode fiber core has a diameter of 8 μm to 10 μm. The core is surrounded by a glass envelope with a lower index of refraction than the core so that the fiber stays within the core. On the outside is a thin plastic jacket that protects the envelope.

Fiber patch cords are classified and summarized as follows

Fiber patch cords (also known as fiber optic connectors), that is, fiber optic connectors for accessing optical modules, are also available in a variety of ways and cannot be used interchangeably with each other. The SFP module is connected to the LC fiber connector, while the GBIC is connected to the SC fiber connector. The following describes several commonly used fiber connectors in network engineering in detail:

1FC-type fiber jumper: external reinforcement is the use of metal sleeves, the fastening method is a turnbuckle. Generally used on the ODF side (the most used on the distribution frame)

2SC-type optical fiber jumper: It connects the connector of GBIC optical module. Its shell is rectangular, and the fastening method is the plug-and-pin type latch type, which does not need to rotate. (the most used on the router switch)

3ST fiber jumper: It is often used in optical fiber distribution frames. The housing is round and the fastening method is turnbuckle. (For 10Base-F connections, connectors are usually ST type. Commonly used for fiber distribution frames)

4LC type fiber optic jumper: connector to connect the SFP module, which is made using the easy-to-use modular jack (RJ) latch mechanism. (used by routers)


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