Australian Engineers Present new Method for Optimizing Optic Cable Capacity
26 March 2013
Researchers from Monash University in Melbourne, Australia, have contributed to the invention of a new method that can significantly boost the carrying capacity of fibre optic cables in a cost-efficient manner, Phys.org reports.
Professor Arthur Lowery and Dr Liang Du worked together on the method with colleagues from the University of Sydney, through the Centre of Excellence for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), and the result was increasing the efficiency of existing optical fibre networks covering Australian towns and cities by using components produced in the country.
For the purpose, engineers at CUDOS re-programmed a network component to work with data-encoding technology which provides for a more productive use of data channels. Then a signal of 10 terabits per second was transmitted over 850 kilometres, which is far above the six megabits per second provided by ADSL 2+ speeds. Thanks to this component, know as a Wavelength Selective Switch, the signals could reach holes in the data traffic which flows around optical-ring networks in cities. "Importantly, new traffic can be squeezed into the fibre at any location and added to any 'lane' of the fiber freeway even between existing lanes," Professor Lowery commented.
The researchers consider that the technology can help network operators optimize capacity to bring it in line with increased demand when necessary. The method can be also used for expanding existing infrastructure to handle growing Internet demand, which is more reasonable than adding new parallel optical fibers to increase network capacity, the professor added.
The method was presented at the Optical Fiber Communications (OFC) conference, which took place in California earlier in March.