Title :
Wireless communication demonstration at 4.1 THz using quantum cascade laser and quantum well photodetector
Author :
Chen, Zhe ; Tan, Zhi Yong ; Han, Y.J. ; Zhang, Rongting ; Guo, X.G. ; Li, Huaqing ; Cao, Jun Cheng ; Liu, H.C.
Author_Institution :
Key Lab. of Terahertz Solid-State Technol., Chinese Acad. of Sci., Shanghai, China
Abstract :
A wireless terahertz (THz) analogue communication link using a quantum cascade laser (QCL) as the source and a quantum well photodetector as the receiver is demonstrated. The QCL operates in continuous-wave mode. By directly modulating the QCL emitting at 4.1 THz, analogue signals are transmitted over a distance of 2 m. The circuit-limited modulation bandwidth is about 580 kHz.
Keywords :
photodetectors; quantum cascade lasers; radio links; continuous-wave mode; frequency 4.1 THz; quantum cascade laser; quantum well photodetector; wireless communication; wireless terahertz analogue communication link;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1407
