Firstly, the fiber preform body, whose main component is high-purity silica, is fired at a temperature of 1500 degrees to form an optical fiber preform.
After 20 hours, the high-purity optical rod was successfully fired. Hanging the 3-meter-long and 20-centimeter-diameter optical rod into the wire drawing furnace, it can draw 7,500 kilometers without interruption within 48 hours. Clean up an annealing tube to To prevent impurities and dust from falling on the optical fiber, the light rod melts into a soft embryo at a high temperature of 2200 degrees Celsius. After passing through a 1-meter-long annealing tube, it gradually cools down into a glass filament with a diameter of 0.1 mm. The take-up machine rotates to drive the fiber to draw and complete the fiber. collection.
The difference between optical cable and optical fiber
I have said so much before, one is optical fiber and the other is optical cable, is it a bit confusing to see, what is the difference between them?
The optical cable is composed of a certain number of optical fibers to form a cable core, which is wrapped with a sheath and a protective layer, and is used for communication and long-distance large-capacity information transmission.
Optical fiber is a kind of transmission tool, just like a thin plastic wire, and the very thin optical fiber will be packaged in a plastic sheath for long-distance information transmission. So the cable contains optical fibers.
Finally, let’s talk about a cable. The cable is composed of a conductive core, an insulating layer, and a sealed protective layer. It uses metal materials (mostly copper, aluminum) as the conductor and is used to transmit power or information. It is composed of several or several groups. Wires are twisted, and cables are mostly used in transportation hubs, substations and other places. In fact, there is no strict boundary between wires and cables. Usually, we call wires with small diameters and fewer batteries, and cables with larger diameters, more batteries, and complex structures.
In recent years, Huawei’s mobile phone business has developed rapidly, and now it has surpassed Apple as the world’s second largest mobile phone manufacturer. Perhaps it is because Huawei’s mobile phone business has developed so well that it has covered up the company’s main business: information and communication business. In the field of submarine cable engineering, many communication technologies are provided by Huawei. Huawei currently has dozens of submarine optical cable projects. From 2015 to 2020, the submarine optical cables laid by Huawei accounted for 1/4 of the world. Amazing! In addition to making mobile phones, Huawei also has such powerful technologies.
With the development of 5G technology, it uses the next generation of cellular technology, using microwave transmission, with fast speed and large coverage. The 5G download speed is as high as 10Gbps faster than the current 1000M optical fiber. With the reduction of 5G commercial network costs, some people It is predicted that 5G will not only eliminate WIFI but also eliminate optical fiber with faster transmission speed, what do you think?