Inside the cable is a copper wire; inside the fiber opt […]
Inside the cable is a copper wire; inside the fiber optic cable is glass fiber.
Optical fiber communication cable is a certain number of optical fibers in accordance with a certain way to form a cable core, outsourcing jacket, and some also cover the outer sheath, used to achieve optical signal transmission of a communication line. Has in Shanghai, Beijing, Wuhan and other places conducted a field test. Shortly afterwards, she was tried out as an inter-office trunk in the local telephone network. After 1984, it was gradually used for long-distance lines and began to adopt single-mode optical fibers. Communication cables have a larger transmission capacity than copper cables, with a long distance, small size, light weight and no electromagnetic interference. Since 1976, the communication optical cables have developed into long-haul trunk lines, urban trunk, offshore and transoceanic communications , As well as the backbone of wired transmission lines such as local area networks and private networks. It has also begun to develop in the area of subscriber loop networks in the cities and provide transmission lines for FTTH and Wideband Integrated Services Digital Networks.
A cable is usually a rope-like cable consisting of two or more wires [at least two of each group] twisted together. Each pair of wires is insulated from one another and often twisted around a center. The entire outer surface is covered with a height Insulation cover; especially submarine cable First: the material is different. Cable to metal (mostly copper, aluminum) for the conductor; fiberglass fiber optic cable as the conductor. Second: the difference between the transmission signal. Cables transmit electrical signals. Optical cable transmission is the optical signal. Third: There are differences in the scope of application. Cables are mostly used for energy transmission and low-end data transmission (such as telephone). Cable for data transmission.
The above is the difference between cable and cable introduced, we can understand. It can be known in practical application that the optical cable has a larger transmission capacity than the copper cable, the distance between the relay segments is long, the volume is small, the weight is light, and there is no electromagnetic interference.