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Transfer 100MB per sec

Research rediscovers light-as a means of data transfer

 

Is’haq Bhat

Agence India Press

 

Srinagar: Scientists have developed new way to transfer data from a server to a laptop, Smart phone or a tablet at 100MB per second using light-emitting diodes (LEDs) in overhead lighting.

 

Experts believe it would be a revolutionary discovery in the field of software and communication technology and it will simplify the data transfer and save time as well. A software engineer Sayeed Shafqat Indrabi told Agence India press, “A light-emitting diode (LED) is a semiconductor light source used as indicator lamps in many devices and are increasingly used for other lighting. Early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.”

 

According to a report of Heinrich Institute in Berlin, with visible light communication (VCL), researchers transfer data from four different films to four laptops simultaneously at 100MB per second, which roughly corresponds to the speed of modern radio network. A modulator switched the LED light on and off at a frequency impermeable to the human eye.

 

“If we will be able to transfer data at the speed 100MB per second from server to a laptop means we can work ten times faster, I simply say it would be magic.” A software engineering Showkat Ahmad Lone told Agence India Press.

 

“The LED consists of a chip of semiconducting material doped with impurities to create a p-n junction. As in other diodes, current flows easily from the p-side, or anode, to the n-side, or cathode, but not in the reverse direction, Charge-carriers—electrons and holes—flow into the junction from electrodes with different voltages. When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon,” Indrabi said.

 

“The receiver in the laptop is a simple photo diode, it catches the light, and an electron device decodes the information and translates it into an electrical impulse that the computer can read. The VLC procedure could be used in places where radio networks are undesirable,” project officer at Heinrich Institute, Klaus Dieter Langer said in the report.

 

Indrabi said, that Light-emitting diodes are used in applications as diverse as aviation lighting, automotive lighting, advertising, general lighting, and traffic signals, while their high switching rates are also useful in advanced communications technology. “Aircraft manufacturers could also supply the on-board entertainment system through VLC, cutting down on cable as well as the overall weight and fuel consumption,” Langer said.

 

“Infrared LEDs are also used in the remote control units of many commercial products including televisions, DVD players, and other domestic appliances,” Indrabi said.

 

“In hospitals, for example, if some data could flow over the operation theatre lights, it could be used to regulate robotic surgeries or transfer images from the body. But the only disadvantage so far, the transfer is impaired if the light source is interrupted,” Langer said. Indrabi said, “It is an amazing discovery which will facilitate user ten times more speed to transfer the data from a server to the receiver (device), I would be eagerly waiting to find a common man using this technology.” (AIP News)

 

Copyright © 2011 AIPTV. All rights reserved.http://agenceindiapress.com

 

 

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