In the 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, underground optical cables, mining optical cables, flame-retardant optical cables, underwater optical cables, etc. The performance parameters of each optical cable are also different. In this article, we will give a simple knowledge answer on how to choose adss optical cable. When selecting adss optical fiber cable parameters, we need to choose the correct adss optical cable manufacturer. The following points need to be paid attention to place:
1: Optical fiber
Regular optical cable manufacturers generally use A-grade fiber cores from large manufacturers. Some low-priced and inferior optical cables usually use C-grade, D-grade optical fibers and smuggled optical fibers of unknown origin. These optical fibers have complex sources and have been out of the factory for a long time, and are often damp. Discoloration, and single-mode optical fiber is often mixed with multi-mode optical fiber. However, small factories generally lack the necessary testing equipment and cannot judge the quality of optical fiber. Because such optical fibers cannot be distinguished by the naked eye, common problems encountered during construction are: narrow bandwidth and short transmission distance; uneven thickness and inability to be connected to pigtails; lack of flexibility of optical fibers and breakage when coiled.
2. Reinforced steel wire
The steel wires of outdoor optical cables from regular manufacturers are phosphated and have a gray surface. Such steel wires will not increase hydrogen loss, will not rust, and have high strength after being cabled. Inferior optical cables are generally replaced with thin iron wires or aluminum wires. The identification method is easy because they appear white and can be bent at will when held in the hand. Optical cables produced with such steel wires have large hydrogen losses. Over time, the two ends where the fiber optic boxes are hung will rust and break.
3. Outer sheath
Indoor optical cables generally use polyethylene or flame-retardant polyethylene. The appearance should be smooth, bright, flexible, and easy to peel off. The outer sheath of poor-quality optical cables has poor smoothness and is prone to sticking to the tight sleeves and aramid fibers inside.
The PE sheath of outdoor optical cables should be made of high-quality black polyethylene. After the cable is formed, the outer sheath should be smooth, bright, uniform in thickness, and free of small bubbles. The outer sheath of inferior optical cables is generally produced from recycled materials, which can save a lot of costs. The outer sheath of such optical cables is not smooth. Because there are many impurities in the raw materials, the outer sheath of the finished optical cable has many very small pits. Over time, it will crack and develop. water.
4. Aramid
Also known as Kevlar, it is a high-strength chemical fiber that is currently used in the military industry. Military helmets and bulletproof vests are produced from this material. At present, only DuPont and Aksu of the Netherlands can produce it in the world, and the price is about more than 300,000 per ton. Indoor optical cables and power overhead optical cables (how does ADS accurately judge the quality of adss optical cables) use aramid yarn as reinforcement. Due to the high cost of aramid, inferior indoor optical cables generally have a very thin outer diameter, so that Use fewer strands of aramid to save costs. Such optical cables are easily broken when passing through pipes. ADSS optical cables generally do not dare to cut corners because the amount of aramid fiber used in the optical cable is determined based on the span and wind speed per second.
The above are several parameters for judging the quality of optical cables when choosing adss optical cables. I hope they can be a reference for our customers and friends. If you are interested in our products or need our professional technical support, please feel free to contact us!