The classification characteristics and precautions of optical fiber jumper

Optical fiber jumper refers to the installation of connector plugs at both ends of the optical cable to realize the active connection of the optical path; The end with the plug is called the pigtail. Similar to coaxial cable, but without the mesh shielding layer. At the center is a transparent glass core.
In multimode fibers, the core is 50 microns to 65 microns in diameter, about the thickness of a human hair. The single-mode fiber core is 8 microns to 10 microns in diameter and is surrounded by a glass cladding with a lower refractive index than the core to hold the fiber in the core. The envelope is protected by a thin plastic jacket.
First, the classification of optical fiber jumper
According to the different transmission media, it can be divided into common silicon-based optical fiber single-mode and multi-mode jumpers, and other optical fiber jumpers using plastic as the transmission medium.
According to the connector structure can be divided into FC, SC, ST, LC, MTRJ, MPO, MU, SMA, FDDI, E2000, DIN4, D4 and other jumpers. Common optical fiber jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, and SC-ST.
Single mode: the general fiber jumper is represented by yellow, and the connector and protective case are represented by blue; Long transmission distance.
Multi-mode: the general fiber jumper is expressed in orange, some are expressed in gray, and the connector and protection are beige or black; Short transmission distance.
Second, the use of fiber jumper precautions
The optical modules at both ends of the fiber jumper must have the same wavelength of transmission and reception, that is, the optical modules at both ends of the fiber must have the same wavelength, and the simple way to distinguish is that the color of the optical module should be the same.
In general, short-wave optical modules use multi-mode and long-wave optical modules use single mode to ensure the accuracy of data transmission.
Do not bend and wind the fiber excessively in use, which will increase the attenuation of light during transmission.
After optical fiber jumpers are used, you must use protective covers to protect optical fiber connectors. Dust and oil can damage the fiber coupling. If the connector is dirty, you can clean it with a cotton swab dipped in alcohol, otherwise the communication quality will be affected.
1. Before use, wipe the ceramic core and end face of the fiber jumper with alcohol and absorbent cotton.
2. The bending radius of the optical fiber is less than 30 mm.
3. Protect the ring and end face to prevent collision and pollution, and put on the dust-proof cap in time after disassembly.
4. In case of damage caused by human or other force majeure factors, replace the damaged optical fiber jumper in time.
5. Please read the instructions carefully before installation, and install and debug under the guidance of the manufacturer or dealer engineer.
6. If the optical fiber network or system is abnormal, use the troubleshooting method to test one by one. When testing or troubleshooting the jumper fault, you can first do the on-off test, generally using a visual laser pointer can judge the entire fiber link. Or further test its index with precision optical fiber insertion loss and return loss meter. If the indicator is within the qualified range, the jumper indicator is normal, otherwise it is unqualified.