MODULATORS of Graphene could break the limits of network speed

Optical fibre networks are at the forefront of Internet record-setting speed. Now, scientists from the University of California, Berkeley have developed a modulator of Graphene that could push the curve forward by a bond multiplied.

The listening team electrically layers thick carbon atom to absorb light at wavelengths used in data communications. The middle of Graphene was then shaped MODULATORS and placed in cables and optical network tiny for light transmitting data outside.

"Graphene allows us to modulators that are incredibly compact and potentially engaged at speeds of up to ten times faster than that current technology allows," explained Professor of engineering UC Berkeley Xiang Zhang, who led the research group. "This new technology will significantly strengthen our capabilities in high-speed optical communication and computing."

Data transfer speed depends on the speed with which the modulator can pulse light. Indoor optical cables, a modulator switches of transparent and opaque than its electrons are charged. Researchers have discovered that modulator of Graphene reached a speed of 1 gigahertz modulation and theoretically could reach as high as 500 gigahertz (500 billion cycles per second).

The tiny size of 25-square-micron of the Graphene modulators, optical cables would finish with modulators of measurement in millimetres used today. Indeed, optical cables could be stalklike which could potentially reduce their ability - the ability to hold an electrical charge - and lead to faster data transmission.

Colleague Zhang Feng Wang, assistant professor of physics and head of the Nano-optical ultrafast Berkeley group, added that the Graphene could be granted to other frequencies. "Graphene can also be used to modulate the new frequency varies, as medium infrared light, which is widely used in molecular detection.".

Graphene itself is already a highly regarded in electronics since its discovery in 2004. as it is flexible, the crystalline material more thin and more strong, pliable as rubber, compatible with silicon and an excellent conductor of heat and electricity. In addition, the research applied material Graphene is producing cheap and easy.

Liu Min, a researcher postdoctoral fellow in the laboratory author and co-lead for Zhang of the elaborate study on "the graphite in a pencil can provide enough Graphene to make $ 1 billion optical modulators.".