Li Gu, Zhiyong Tan, Qingzhao Wu, Chang Wang, Juncheng Cao,
http://www.opticsjournal.net/abstract.htm?aid=OJ150729000104w3y6B8
A wireless terahertz (THz) communication link is demonstrated, in which a THz quantum cascade laser and a THz quantum-well photo-detector (QWP) serve as the emitter and receiver, respectively. With the help of the well-matched THz QWP, the optical collection efficiency has greatly been improved. A data signal transmitted over 2.2 m with a low bit error rate (<=1 \times 10-8) and data rate as high as 20 Mbps is achieved, which are almost 1 order of magnitude higher than that previously reported.
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