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Japanese Scientists Develop Terahertz Transmission Technology

A team of Japanese researchers from the Tokyo Institute of Technology has managed to transmit 3Gbps at an ultra high frequency in a band commonly known as the "T-ray" that lies between 300GHz and 3THz.

The experiment was carried out at 542GHz and could support data transfer rates of up to 100Gbps which is 15 times more than what 802.11ac, the followup to the current 802.11n technology, supports.

A tiny device, known as the resonant tunnelling diode or RTD is what managed to it possible. Until recently, T-Ray technology was too bulky, expensive and consumed too much energy to consider putting it in portable devices or consumer products.

Although the range of any such device would be shorter because the signals can't propagate far or penetrate deep into buildings for example, T-ray devices could communicate between themselves and transmit data at ultra-high speeds.

The band is not regulated by the telecommunications agencies and could help alleviate the lack of available bands at the lower end of the electro-magnetic spectrum.

The proof-of-concept experiment presented by the Japanese team holds a lot of promises although actual products are unlikely to hit the market before the second part of the decade.

Source : Electronic Letters

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