Abstract-Two-colour THz quantum well photodetectors

 Haixia Wang,  Rong Zhang, Feng Wang, Zhejing Jiao, Dixiang Shao,   Zhanglong Fu, Tao Zhou,  Zhiyong Tan, Jungcheng Cao.

http://ieeexplore.ieee.org/document/8011679/

Two-colour terahertz (THz) quantum-well photodetectors are designed, fabricated, and characterised. To realise two-colour detection, a stacked structure is adopted by sequentially growing two one-colour detectors. It is found that the spectra of the stacked device are in accordance with those of the two individual detectors connected in series. The relatively broad spectral bandwidth may enable its use in a THz spectrometer

Abstract-20 Mbps wireless communication demonstration using terahertz quantum devices

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.

Abstract-20 Mbps wireless communication demonstration using terahertz quantum devices

Li Gu, Zhiyong Tan, Qingzhao Wu, Chang Wang, and Juncheng Cao
https://www.osapublishing.org/col/abstract.cfm?URI=col-13-8-081402

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 (≤1×10−8) 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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