In the 21st century Internet era, optical cables are indispensable materials for the construction of optical communication infrastructure. As far as optical cables are concerned, there are many categories, such as power optical cables, buried optical cables, mining optical cables, flame-retardant optical cables, underwater optical cables, etc. Etc., the performance parameters of each type of optical cable are also different. In this article, we will make a simple knowledge answer on how to choose adss optical cable. When choosing adss optical cable parameters, we need to choose the correct adss optical cable manufacturer. The following points are needed Points to note:
Regular optical fiber cable manufacturers generally use grade A cores from major manufacturers. Some low-cost and inferior optical cables usually use grade C, grade D optical fibers and smuggled optical fibers from unknown sources. These optical fibers are often sent out due to their complex sources and a long time to leave the factory. Discoloration and single-mode fiber is often mixed in multi-mode fiber. Generally, small factories lack the necessary testing equipment and cannot judge the quality of the fiber. Because such optical fibers cannot be distinguished by the naked eye, the common problems encountered in construction are: narrow bandwidth and short transmission distance; uneven thickness and cannot be connected to the pigtail; the optical fiber lacks flexibility and breaks when the fiber is bent.
2. Reinforced Steel Wire
The steel wires of the outdoor optical cables of regular manufacturers are phosphate, and the surface is gray. Such steel wires will not increase hydrogen loss, rust, and have high strength after being cabled. Inferior optical cables are generally replaced by thin iron wires or aluminum wires. The identification method is easy to be white in appearance and can be bent at will when pinched in the hand. The optical fiber cable produced with such steel wire has a large hydrogen loss, and after a long time, the two ends of the hanging optical fiber box will rust and break.
Indoor optical cables generally use polyvinyl or flame-retardant polyvinyl, and their appearance should be smooth, bright, flexible, and easy to peel off. The outer skin of poor quality optical fiber cable is not smooth and easy to adhere to the right sleeve and aramid inside.
The PE sheath of the outdoor optical cable should be made of high-quality black polyethylene. After the cable is formed, the outer skin is smooth, bright, uniform in thickness, and free of small bubbles. The outer skin of inferior fiber optic cable is generally produced with recycled materials, which can save a lot of costs. The outer skin of this kind of fiber optic cable is not smooth. Because there are many impurities in the raw material, the outer skin of the made fiber optic cable has many tiny pits, which will crack and enter after a long time. water.
Also known as Kevlar, it is a kind of high-strength chemical fiber, which is currently used in the military industry. Military helmets and bulletproof vests are produced from this material. At present, only DuPont and the Dutch Akzo can produce them, and the price is about 300,000 tons. Indoor optical cables and power overhead optical cables (How do ADSS accurately judge the quality of ADSS optical cables? S) are made of aramid yarn as reinforcement. Because of the high cost of aramid, inferior indoor optical cables generally have a very thin outer diameter. Use fewer strands of aramid to save costs. Such an optical cable is easy to be broken when passing through the tube. Because ADSS optical cable determines the amount of aramid fiber used in the optical cable according to the span and wind speed per second, it is generally not afraid to cut corners.
The above are several parameters for judging the quality of the optical cable when choosing the ADSS optical cable. I hope that our customers and friends can make certain references.