Researchers set sights on data transmission world record

A research team, led by Dr Stuart Walker from Essex University, claims to have developed a data transmission method which can achieve world record telecommunications data rates, of over a terabit (one trillion binary digits) per second, on optical fibres which already exist in the majority of in-building communications networks throughout the world. These optical fibres are known as multimode fibres.

Dr Stuart Walker is presenting the world record transmission concept on Thursday 5 September at Photon02 in Cardiff. His scheme combines the data transmission techniques commonly used in communications networks to allow many signals to travel simultaneously along a fibre optic cable.

Traditional networks send a number of single data transmission signals along fibre optic cables at the same time. This is possible as each signal occupies a different part or wavelength of the light spectrum. Dr Walker`s team uses subcarrier signals, which consist of two data signals on top of each other occupying the same wavelength, making two signals appear as one. The scheme combines many of these subcarrier signals onto the same transmission path, allowing all of them to travel down the cable on the same wavelength. This means that where traditionally only one signal could occupy one wavelength, many signals can now occupy that single wavelength.

By using this technique on all available wavelengths, the group`s preliminary experiments showed that a data rate of 1.02 terabits per second could be achieved over a distance of up to 3km on conventional multimode fibre.

As the number of Internet users continues to grow and users demand more bandwidth, to run faster programmes, the data transfer requirements of local area networks (lans) are steadily growing. As the majority of these existing lans use multimode fibre already, the team`s work could save telecommunications companies money by allowing them to increase the data traffic on their existing networks, instead of laying new more expensive fibre.

Media Contact

Joanne Aslett alfa

All news from this category: Information Technology

Here you can find a summary of innovations in the fields of information and data processing and up-to-date developments on IT equipment and hardware.

This area covers topics such as IT services, IT architectures, IT management and telecommunications.

Back to the Homepage

Comments (0)

Write comment

Latest posts

Acute itching in eczema patients linked to environmental allergens

Newly identified pathway explains why antihistamine drugs often don’t work to control severe itch. In addition to a skin rash, many eczema sufferers also experience chronic itching, but sometimes that…

Simulating evolution to understand a hidden switch

Computer simulations of cells evolving over tens of thousands of generations reveal why some organisms retain a disused switch mechanism that turns on under severe stress, changing some of their…

How cells move and don’t get stuck

Cell velocity, or how fast a cell moves, is known to depend on how sticky the surface is beneath it, but the precise mechanisms of this relationship have remained elusive…

Partners & Sponsors

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close