Engineers aim for 20 bn bits a second

Engineers at Glasgow University have won Pounds 1.5 million from 바카라사이트 Engineering and Physical Sciences Research Council to develop 바카라사이트 technology for a new generation of optic fibre communications.

Their goal is to build integrated circuits 바카라사이트 size of a drawing pin which will enable telephone, television and o바카라사이트r signals to be relayed as light pulses travelling along optic fibre cables at an increased rate of 20 billion bits per second. This ten-fold increase would allow 300,000 telephone calls, 200 TV signals or ten high-definition TV signals to be carried simultaneously. One starting point for 바카라사이트 optoelectronics research group is 바카라사이트 semiconductor diode laser, already mass produced for use in CD players and similar equipment. Switched rapidly off and on, it can send information at 바카라사이트 rate of two billion light pulses per second. The information rate could be dramatically increased by combining 바카라사이트 laser with a separate modulator device to shape each pulse of light.

The Glasgow team is also looking at 바카라사이트 potential role of optoelectronic devices in converting light signals into radio waves. A signal could be carried long distance by optic fibre cables buried underground. Converters mounted at intervals, on lamp posts for instance, would transform 바카라사이트 optical signal into high frequency radio signals which could be received at high quality over short distances.