Fiber Cabling Tips and precautions

This article will discuss, is not a specific case of fiber cabling, but the wiring of some of the points of attention to make a hint, in order to have the interest of friends for reference.

First of all, we should understand the optical fiber communication. Fiber is the abbreviation of optical fibre, consisting of fine glass filaments about 0.1mm in diameter. It is transparent and slender, although it is thinner than hair, it has a guided wave structure which encloses the light and propagates along the axial direction. Optical fiber communication is due to the mysterious structure of optical fibers developed by the optical wave as the carrier, optical fiber as a transmission medium of a communications mode.

The advantages are also obvious: the transmission bandwidth is wide, the communication capacity is large, the loss is low, is not affected by the electromagnetic interference, the linear diameter is fine, the weight is light and the abundant resources. However, things can not be perfect, fiber itself has shortcomings, such as the texture is more brittle, low mechanical strength is its Achilles heel. A little attention, will be broken in the outer cable. When encountering similar problems, the wiring process also needs to master certain skills, mainly how to minimize the attenuation of the signal.

Attach importance to the selection of optical fiber

The selection of optical fiber is based on the optical fiber and optical fiber, in addition to the core number and the type of fibre. Like what:

1, transmission distance within 2km, can choose multimode fiber, more than 2km can be used to relay or select Single-mode fiber.

2, the building used in the use of optical fiber in the selection should pay attention to its flame-retardant, poisonous and smoke characteristics. Generally in the pipeline or forced ventilation can be used fire-retardant but smoke type; if it is exposed, the type of flame retardant, non-toxic and smoke-free should be selected. ---http://bianceng.cn (computer science)

3, the outdoor optical cable directly buried, it is appropriate to choose armored cable. When overhead, you can choose a black plastic outer sheath with two or more reinforcements.

Standard construction

In fiber cabling, signal attenuation is also unavoidable. The causes are both internal and external: internal attenuation is related to optical fiber material, and external attenuation is related to construction installation! Therefore, it should be noted that:

The first thing to do is to have highly trained technicians to carry out the optical fiber termination and maintenance.

Must have a very complete design and construction drawings for the construction and future inspection convenient and reliable. In the construction should always be careful not to make the cable under pressure or hard object, in addition, traction should not exceed the maximum laying tension.

To turn the optical fiber, the turning radius should be greater than 20 times times the diameter of the fiber itself.

When you wear a wall or a floor, use a protective plastic tube with a shield and fill the pipe with a flame-retardant filler. A certain amount of plastic piping can also be laid in advance in a building.

Once the length of the cloth is not too long (general 2KM), wiring should start from the middle to both sides traction.

When the fiber is applied to the backbone network, each floor wiring must use at least 6 core cable, advanced application preferably can use 12 core cable. This is from the application, backup and expansion of three aspects to consider.

The most important thing for a long distance fiber laying is to choose a suitable path. This is not necessarily the shortest path is the best, but also pay attention to the use of land, erected or buried the possibility of.

When laying in mountainous areas and high voltage power grids, it is necessary to pay attention to the reliable grounding of metal objects in the optical fiber, which should normally be 3 places per kilometer, or use non-metallic fiber.

Summary:

Optical fiber is the media choice of backbone of data network. As the speed enters the gigabit and thousands of gigabit range, the fiber will become the dominant building wiring medium. In the future, because the optical fiber can not set up the wiring and the active hardware, the cost of the intermediate links can be greatly reduced, the cost of total costs, it will also achieve the application of fiber to the desktop.