Improved ‘THz Torch’ Technology for Short-range Wireless Data Transfer

This paper reports recent developments in the ‘THz Torch’ technology, for short-range wireless data transfer. The ultra-low cost ‘THz Torch’ concept was recently introduced as an ultra-secure non-contacting technology in the physical layer. Previous results reported a 10 bits/s link over a single channel, across a distance of 1 cm. In this paper, some fundamental limitations of this technology are analyzed and potential methods are proposed to further increase the data rate and working distance of the communications link. The improved single-channel system demonstrates a bit rate of 380 bits/s over a 1 cm range, which presents a factor of 38 improvement. Index Terms — THz Torch, low cost, terahertz, wireless link, short-range, contactless.