Precautions for optical fiber cabling

First, we should understand optical fiber communication. Optical fiber is short for optical fiber. It consists of a fine glass wire with a diameter of about 1mm. It is transparent and slim. Although it is fine than the hair, it has a guided wave structure that closes the light in it and transmits along the axial direction. Optical Fiber Communication is a communication method that develops with the magic structure of optical fiber as the carrier frequency and optical fiber as the transmission medium.

Its advantages are also obvious: transmission bandwidth, large communication capacity, low loss, no electromagnetic interference, fine wire diameter, light weight, and rich resources. However, it is impossible for a thing to be completely perfect, and the optical fiber itself has its own shortcomings. For example, the quality is brittle and the mechanical strength is low, which is its critical weakness. If you do not pay attention to it, it will be broken into the outer skin of the optical cable. When you encounter similar problems, you need to master some skills in the wiring process, mainly how to minimize signal attenuation.

Emphasis on optical fiber selection

The selection of Optical Fiber not only depends on the number of Optical Fiber cores and the type of optical fiber, but also depends on the use environment of the optical fiber. For example:

1. If the transmission distance is less than 2km, you can select multi-mode optical fiber. If the transmission distance is over 2km, you can use a relay or single-mode optical fiber.

2. Pay attention to the flame retardant, toxic, and smoke Characteristics of the optical fiber used in buildings. Flame Retardant but smoke type is optional in the pipe or forced ventilation; if it is exposed, flame retardant, non-toxic and smoke-free type should be selected.

3. When directly Embedding Optical Cables for outdoor use, armored optical cables should be used. Black plastic outer sheath with two or more reinforced bands can be used for optical fiber overhead.

Standard Construction

Signal attenuation is also inevitable in optical fiber cabling. There are two reasons for this: internal and external attenuation is related to the optical fiber material, and external attenuation is related to the construction and installation! Therefore, it should be noted that:

The first thing we should do is perform optical fiber connection and maintenance by strictly trained technicians.

Complete Design and construction drawings must be provided to facilitate construction and future inspection. During construction, always be careful not to make the optical cable under heavy pressure or be hurt by hard objects; in addition, the traction should not exceed the maximum laying tension.

The turning radius of an optical fiber must be 20 times the diameter of the optical fiber.

When the optical fiber goes through the wall or the floor, the plastic tube should be added with the protection port, and the tube should be filled with a flame retardant filler. A certain amount of plastic pipes can be laid in advance in a building.

The length of a layout should not be too long (generally 2 KM). The layout should be pulled from the middle to both sides.

When the optical fiber is used in the trunk network, each floor must use at least 6-core optical fiber cables. It is best to use 12-core optical fiber cables for advanced applications. This is from three aspects: application, backup, and expansion.

For long-distance optical fiber laying, the most important thing is to select a proper path. Here, not necessarily the shortest path is the best, but also pay attention to the right to use the land, the possibility of erection or burial.

When laying in mountainous areas and high-voltage power grids, pay attention to the reliable grounding of metal objects in optical fiber cables. Generally, there should be 3 grounding points per kilometer, or non-metallic optical fiber cables should be used.

Summary

Optical fiber is the media choice for data network backbone. Fiber will become the dominant building cabling medium as the speed moves to the Gigabit and several Gigabit ranges. In the future, because optical fiber does not have a wiring room or an active hardware, it will save the cost of intermediate links and greatly reduce the total cost. Therefore, it will certainly implement the application of optical fiber to the desktop.