Since the earliest days of telecommunications there has been an ever increasing need to transmit more data even faster. Initially single line wires were used. These gave way to coaxial cables that enabled several channels to transmitted over the same cable. However these systems were limited in bandwidth and optical systems were investigated.![]()
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Optical communications became a possibility after the first lasers were developed in the 1960s. The next piece of the jigsaw fell into place when the first optical fibers with a sufficiently low loss for communications purposes were developed in the 1970s. Then, during the late 1970s a considerable amount of research was undertaken. This resulted in the installation of the first optical fibre telecommunications system. It ran over a distance of 45 km and used a wavelength of 0.5 mm and had a data rate of just 45 Mbps - a fraction of what is possible today.![]()
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Since then, considerable improvements have been made in the technology. Data rates have improved and in addition to this the performance of the optical fibre has been improved to enable much greater distances to be achieved between repeaters. As an indication of this the speeds that can now be achieved along through a fibre optic system exceed 10 Tbps.![]()
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When the first fibre optic transmission systems were being developed, it was thought that the fibre optic cabling and technology would be prohibitively expensive. However, this has not been the case and costs have fallen to the extent that fibre optics now provides the only viable option for many telecommunications applications. In addition to this it is also used in many local area networks where speed is a major requirement.
Optical Fibre Communication - Fiber Telecommunications » Electronics Notes
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Fibre optical communication enables telelcommunications networks to provide high bandwidth high speed data connections across countries adn the globe . . find out how it works.
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