Japanese network operator NTT reports transmission record of 1.2 TBit/s in the fiber optic network

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from Maximilian Hohm
The Japanese network operator NTT has set a new transmission record in the fiber optic network with 1.2 TBit/s. At the same time, the power consumption per bit could apparently be reduced to 10 percent of the previous requirement, which means that the technology has enormous potential. Therefore, read more about the record attempt and the network provider’s plans below.

While the Federal Network Agency also considers 10 Mbit/s to be an acceptable download bandwidth in 2022, technological progress is much faster in other countries. Japan is one of the pioneers in fiber optic expansion, which makes enormously high bandwidths possible and new users. According to the Japanese network operator NTT, it has now set a new speed record in an optical data network. With a specially developed device, the signal modulation speed could be increased to 140 gigabaud, which resulted in 1.2 Tbit/s per wavelength.

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As a result, NTT is about 50 percent faster than previous measurements that were below this mark. However, especially against the background of current electricity prices, the network operator has managed to do something even more impressive. Apart from the significantly higher bandwidths with which the record was set, the power consumption per bit that is required for this has also been reduced to around 10 percent of the previous requirement, which impressively underlines the advantages of optical transmission systems.

NTT’s goal is to use these technologies to build an all-photonics network that durably combines the benefits of higher performance and lower power consumption. Understandably, however, not many details about the specific development are given out. All that is known is that the network provider uses a digital coherent detection scheme for the light, which captures it as digital data and processes it accordingly.

In the networks of this type used in practice, speeds of around 100 Gbit/s per wavelength have been achieved so far, while the record was around 800 Gbit/s. NTT has thus increased this significantly and hopes to achieve significantly higher bandwidths and generate lower operating costs by means of trickle-down effects in everyday applications.

Source: Golem.de

Reference-www.pcgameshardware.de