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Data rate doubled in fiber optic networks

Data rate doubled in fiber optic networks

The worldwide network of fiber optic cables is only fast up to 40 Gbit/s today. In order to double the transmission rate, researchers at a university have set about developing a new technology called 'polarization multiplex'.

At the University of Paderborn, scientists have developed a new technology, called 'polarization multiplex', for fiber optic cables. With it one should be able to double the backbone of global communication in terms of performance. This is achieved by allowing two light signals to oscillate perpendicular to each other and not using more and more different wavelengths as has been the case up to now. This doubles the bandwidth. A special receiver is required to capture the two signals and separate them again. Since the light waves do not have exactly the same transit time, the maximum data rate is limited again. A transfer rate of 80 Gbit/s was achieved in a first test on a 212-kilometer route.