Researchers at the Technical University of Denmark (DTU), the same people who in 2009 had passed the barrier of the terabit have now attained the stratospheric rate of 43 Tera Byte Per Second with a single optical fiber using a single laser transmitter. If there was such a connection it would be likely to transmit 1 TB of data in less than 0.20 seconds or 1 GB in less than 0.2 milliseconds! The previous record (26 tbps.) of 2011 belonged to the Karlsruhe Institute of Technology.
In the past, several demonstrations have been carried out with fiber optic networks that arrive at even higher speeds, even thousands of terabits per second, but they all use multiple lasers of multiple fibers. It is so of laboratory experiments that probably will never arrive on the market. The fiber optic links commercial (for example, the entire backbone of the Internet) are in fact based on the individual fibers and individual laser. That’s why the university Danish discovery is very significant for the future of communications.
The techniques used by the STP may be brought into the real world within a few years. To get a result so amazingly, the researchers used multi-core optical fiber with seven cores, produced by the Japanese telecom giant NTT. The optical signal is carried by multiple channels, even if there is a single strand of glass fiber. In 2011, when the German university has achieved his evidence, this type of fiber was still too expensive.
The DTU has unfortunately not provided additional information on transmission techniques. Usually, you use the SDM (Spatial Division Multiplexing) and WDM (Wavelength Division Multiplexing). Currently, the maximum speed is reached with the standard IEEE 100GbE. In future, it is planned ratification of the normal 400GbE and 1000GbE. The stipulation should be approved by 2017.
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