Network Networks : Fiber Optic Networks

1450 Words6 Pages
Just like most other types of technology, cabling and communication are advancing faster than ever before. One of the most promising advances in this area is fiber optic cabling. Fiber optic refers to the technology and the medium associated with the transfer of information as light impulses along a plastic or glass fiber. With the demand for faster communication and network speeds fiber optic is quickly becoming the leading choice in most developed countries. Fiber optic wire is capable of carrying much more information than a conventional copper wire can and electromagnetic interference is much less of an issue with fiber. One single glass fiber can carry the equivalent of one-hundred television channels or one hundred thousand phone…show more content…
The people who thought that audio, video, and other forms of data could be transmitted by light through cables, were scientists that came much later. Modern day Fiber optics was developed by Bell labs and Corning in the late 1960s. The glass fibers used in more modern day fiber-optic systems are based on ultrapure fused silica. Fiber that is made from ordinary glass is so dirty that impurities reduce signal intensity by a factor of one million in only about 16 ft of fiber cable. These impurities need to be removed before useful long-haul fibers can be made. Most of these advances occurred in the late 20th century and by 1977 glass-purifying and other fiber-optic manufacturing techniques had also come a very long way. But even perfect and pure glass is not completely transparent. It weakens light in two different ways. One, which occurs at shorter distances is a scattering caused by unavoidable density changes throughout the fiber. In other words, when the light changes mediums, the resulting change in density causes interference. The other is a longer wavelength absorption by atomic vibrations. Even with these two small disadvantages, fiber Fiber-optic technology has been taken advantage of in many areas. Many intercity routes were in operation by 1985, and a handful of transoceanic routes had been set up by 1990. In the mid-90 's, worldwide connections were possible through the Internet. Fiber optics have very quickly become the
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