How to use fiber patch cords correctly?
1. The transceiver wavelengths of the optical modules at both ends of the fiber jumper must be the same, that is to say, both ends of the fiber must be optical modules with the same wavelength. The simple way to distinguish is that the colors of the optical modules should be the same. In general, short-wave optical modules use multimode fibers (orange fibers), and long-wave optical modules use single-mode fibers (yellow fibers) to ensure the accuracy of data transmission.
2. Do not bend and loop the optical fiber excessively during use, which will increase the attenuation of light during transmission.
3. The optical fiber connector must be protected with a protective sleeve after the optical fiber jumper is used. Dust and oil pollution will damage the coupling of the optical fiber. There are three main types of fiber jumpers according to the termination type: ST-ST, SC-SC, ST-SC. According to the type of fiber, there are mainly two types of single-mode fiber and multi-mode fiber. The specifications of the jumper length are 0.5m, 1m, 2m, 3m, 5m, 10m and so on. According to the cable outer sheath material, it can be divided into ordinary type, ordinary flame retardant, low smoke halogen free type, low smoke halogen free flame retardant type, etc.
4. According to the fire rating of the building and the fire resistance requirements of the materials, the integrated wiring system should take corresponding measures.
5. When laying cables or optical cables in flammable areas and building shafts, flame-retardant cables and optical cables should be used; in large public places, flame-retardant, low-smoke, low-toxic cables or optical cables should be used; adjacent equipment or Fire-retardant wiring equipment should be used in the handover room.
fiber optic cabling
In fiber optic cabling, signal attenuation is also inevitable. There are two reasons: internal and external: the internal attenuation is related to the optical fiber material, and the external attenuation is related to the construction and installation, so it should be noted that:
The first thing that should be done is that the termination and maintenance of the optical fiber should be carried out by technical personnel who have received strict training, and the operation should be carried out in accordance with the construction specifications of the optical fiber.
There must be very complete design and construction drawings for convenient and reliable construction and future inspections. During construction, be careful not to make the optical cable under heavy pressure or punctured by hard objects; in addition, the traction force should not exceed the maximum laying tension.
When the fiber is to be turned, its turning radius should be greater than 20 times the diameter of the fiber itself. When the optical fiber passes through the wall or floor, a protective plastic pipe with a mouth guard should be added, and the pipe should be filled with flame retardant filler. A certain amount of plastic pipes can also be pre-laid in the building.
When the optical fiber is used in the backbone network, at least 6-core fiber optic cable should be used in the wiring room of each floor, and 12-core fiber optic cable should be used for advanced applications. This is considered from three aspects: application, backup and expansion.
The most important thing for long-distance fiber optic laying is to choose a suitable path. The shortest path is not necessarily the best, but also pay attention to the right to use the land, the possibility of erection or burial, etc.
