Fiber Failure Factors

Fiber optics are so ubiquitous in our daily lives that we know a lot about what they do. I don’t know what are the causes of fiber optic failures. Have you ever learned about them? Let’s talk about the factors of fiber optic failures and how to judge the location of fiber optic failures.

What are the factors of fiber optic failure

1. Internal factors.

If the insulation performance of the fiber optic cable line is not good, the joint box will be affected by moisture or water, the operating strength of the cable will be greatly reduced due to stress corrosion and static fatigue, and in severe cases, the cable may break situation, a failure occurred.

2. The line connector is faulty.

This is also the place where problems are most likely to occur, because the original optical cable structure is no longer protective or weakened. If it wants to work normally, it must rely on the splice box, so reducing splice failures is better guaranteed. Smooth operation of fiber optic lines.

3. External factors.

The first is the impact of thunder force. All the network cables used in the wiring system have metal conductors. When they are struck by lightning, a strong current will be generated, which will cause damage to the optical cable equipment, and even cause casualties in severe cases.

4. External influence.

This is caused by its wiring environment. The laying of optical fiber cables is generally in the field, and the standard for their burial is to go deep into the underground layer, so it is difficult to avoid damage to the optical cable in this respect.

How to determine the location of fiber optic faults

No matter which splicing method is adopted in the construction, the coating layer of the optical fiber joint has been removed. Although the protection has been enhanced, the strength and flexibility of the optical fiber at the joint are not as good as before. In addition, seasonal construction and large temperature differences Or during the fiber coiling process, the force is too high when the exothermic melt tube is improperly positioned, and the bare fiber inside will be squeezed to form bubbles inside. When hot-melting, dust and fine sand enter the hot-melt pipe, coupled with the influence of sun and rain, wind and swing, and vibration during the renovation process, there is a possibility of obstacles at the joint of the overhead optical cable.

The obstacles in the middle of the optical cable are mostly caused by factors such as man-made external forces and natural disasters. During the test, it will be found that one or more channels of the optical fiber are blocked at the same position, or several optical fibers in a certain bundle of tubes have a large loss. At this time, the approximate location of the fault can be judged according to the distance of the test and the maintenance diagram and other materials. If there is no total blockage due to knives, rats, etc., and the obstacle point is concealed to a certain extent, you can open the splice box that is closest to the obstacle point, disconnect the problematic optical fiber, and test to both sides.

The terminal obstacle refers to the fault inside the pigtail terminal box and the incoming optical cable. During the test, it will be found that there is no transmitted signal or the starting position is too low. It is necessary to reduce the measurement range, change the pulse width, and retest to determine the specific location of the obstacle.

The above is the whole content of what are the factors of fiber optic failure and how to judge the location of fiber optic failure. I believe that you have a certain understanding of the knowledge of fiber optic failure after reading this, and hope to give you some help.