Wireless sub-THz communication system with high data rate

S. Koenig

doi:10.1038/NPHOTON.2013.275

Wireless sub-THz communication system with high data rate

2013-10-13

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DOI：10.1038/NPHOTON.2013.275

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In communications, the frequency range 0.1-30 THz is essentially terra incognita. Recently, research has focused on this terahertz gap, because the high carrier frequencies promise unprecedented channel capacities(1). Indeed, data rates of 100 Gbit s(-1) were predicted(2) for 2015. Here, we present, for the first time, a single-input and single-output wireless communication system at 237.5 GHz for transmitting data over 20 m at a data rate of 100 Gbit s(-1). This breakthrough results from combining terahertz photonics and electronics, whereby a narrow-band terahertz carrier is photonically generated by mixing comb lines of a mode-locked laser in a uni-travelling-carrier photodiode. The uni-travelling-carrier photodiode output is then radiated over a beam-focusing antenna. The signal is received by a millimetre-wave monolithic integrated circuit comprising novel terahertz mixers and amplifiers. We believe that this approach provides a path to scale wireless communications to Tbit s(-1) rates over distances of >1 km.

Keywords:

PHOTONIC MILLIMETER-WAVE

COHERENT DETECTION

DATA-TRANSMISSION

FIBER

TERAHERTZ

BAND

LINK

RADIO

FUTURE

Wireless sub-THz communication system with high data rate

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