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Optical fiber jumper and fiber terminal box how to use?
- Feb 05, 2018 -

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Nowadays, everybody is inseparable from the Internet. The speed of the network will bring a very different feeling. We certainly are biased in favor of the ultra-fast network, of course, if it is able to afford the case of ultra-fast network, it would be great. Technology is constantly evolving, so many new things are constantly emerging. Network From the broadband that everybody used before, till now the optic fiber, the speed of the network is constantly improving. The following Xiaobian to tell you what is fiber jumper, fiber jumper type, and the structure of fiber jumpers.

What is fiber patch cord?

Fiber jumpers are used to make jumpers from the device to the fiber cabling link. A thick protective layer, generally used in the optical terminal and the connection between the terminal box, used in optical communication systems, optical access networks, optical data transmission and LAN and some other areas.

Type of fiber jumper

Optical fiber jumper (also known as optical fiber connector), that is, access to the optical module optical fiber connector, there are many, and can not be mutually interoperable. The SFP module is connected to the LC fiber connector, while the GBIC is connected to the SC fiber connector. The following network engineering several commonly used fiber optic connectors for a detailed description:

① FC optical fiber jumper: external strengthening method is the use of metal sleeve, fastening the way for the buckle. Generally used on the ODF side (the most used distribution frame)

②SC-type optical fiber jumper: Connect the connector of GBIC optical module, its shell is rectangular, fastening method is the use of plug pin type, do not need to rotate. (Most used on the router switch)

③ ST type optical fiber jumper: Commonly used in optical fiber distribution frame, the housing is round, fastening means for the screw buckle. (For 10Base-F connection, the connector is usually ST type. Commonly used in fiber patch panels)

④LC type fiber optic patch cord: connector to connect the SFP module, it is easy to use modular jack (RJ) latch mechanism made. (Router commonly used)

Fiber jumper structure

Optical fiber jumper (also known as optical fiber connector) refers to both ends of the cable are equipped with connector plugs, used to achieve optical activity connection; plug at one end is called the pigtail. Optical Fiber Patch Cord / Cable is similar to a coaxial cable except that it does not have a mesh screen. The center is a light-propagating glass core. In multimode fiber, the diameter of the core is from 50 μm to 65 μm, which is roughly equivalent to the thickness of human hair. The single-mode fiber core diameter of 8μm ~ 10μm. A core of glass envelope with a lower index of refraction than the core is surrounded by the core to keep the fiber in the core. Outside is a thin plastic jacket, used to protect the envelope.

Fiber optic terminal boxes are ancillary facilities for the telecommunications industry that accept pigtails and protect their connectors. I do not know if you have not noticed that in the outdoor network cabling often use fiber optic cable, and the indoor use of twisted pair, the two can not be directly connected, then we need to use fiber terminal box to fiber optic cable Branch and continued to the indoor line.

In other words, the optical fiber terminal box is equivalent to a connector, played the role of cable and pigtail. Firstly, the end of the optical cable is connected to the terminal box and connected with the optical jumper. After the function of the switch, the entire optical cable is split into a single optical fiber and the optical fiber and the optical fiber and the fiber pigtail are respectively completed The welding. The successful installation of the optical fiber terminal box, not only can make the fiber and pigtail protection and connection, but also minimize the interference of the environment on data transmission, so that it has higher data transmission efficiency.

So how to install the use of fiber optic terminal box? First, the optical fiber terminal box is generally used indoors, such as outdoor use should do some protective measures to prevent the wind and rain, exposure to shorten the life of the terminal box. Second, the optical fiber terminal box is suitable for working at a temperature of minus 25 degrees Celsius to forty degrees Celsius. If it exceeds this range, the working state of the terminal box may be affected. Second, the system and the service life is generally about 20 years, in order to ensure its life, save the terminal box environment in the temperature, humidity, pressure and other aspects of certain requirements: If the storage temperature is best kept at minus 25 degrees Celsius 55 degrees Celsius, the pressure maintained at between 70 to 106 kilopascals, modest should be controlled below 85%.

In terms of installation, installation should pay attention to the installation location of fiber terminal box, select the appropriate installation method. In general, the terminal box should be located 0.3 m above the floor (or raised floor) to allow sufficient space for mounting components such as the back box, adapter, and external outlet. In the fixed terminal box, according to the specific conditions of the construction site, the use of available expansion screws, nailing and other different tools and methods. If you need to install the device on the ground, should pay attention to the waterproof and dustproof junction box, and strengthen its compressive, seismic capacity.