Sep 13 2010
Researchers at the University of Southampton's Optoelectronics Research Centre have built a new, advanced data transmission system that has the potential to significantly enhance the energy efficiency and transmission capacity of optical communication networks.
Researchers, working on the FP7 PHASORS project, revealed that the data transmission system eliminates ’cross talk’ and ’phase noise’ interferences during data transmission through optical networks. Data transmission via optical networks is presently limited because of cross talk and phase noise interferences. Cross talk is the unintentional impact of one signal over another, while phase noise is the random fluctuation in a signal’s phase that impacts the quality of the transferred signal.
The PHASORS project was initiated to develop new components and technology to enhance the energy-efficiency and data transmission capacity of existing optical communications networks.
Scientists working on the PHASORS project have developed a phase regenerator and a phase-sensitive amplifier needed for binary phase encoded signals. The device removes the phase noise without having to convert to electrical signal, which normally slows down the speed during data transmission. The amplifier takes in a noisy data signal and restores the same quality by decreasing the phase noise’s build up and the amplitude noise.
Renowned researches from the National and Kapodestrian University of Athens, The Tyndall National Institute, Chalmers University of Technology and the Optoelectronics Research Centre worked on the PHASORS project.