论文部分内容阅读
随着无线通信速率需求的增加和材料生长、器件工艺制作水平的提高,太赫兹(THz)通信已成为未来高速无线通信系统发展的一个重要方向。介绍了太赫兹通信的特点以及国际上太赫兹通信系统的发展现状,并报导了一种利用太赫兹量子级联激光器(THz QCL)作为发射源,太赫兹量子阱探测器(THz QWP)作为接收器的太赫兹数字通信演示系统。该系统采用On-Off-Key(OOK)调制和直接强度检测方式,通信频点为3.9 THz,通信距离为2.2 m,传输速率可达1 Mbps以上。最后探讨了该系统的带宽限制因素及其在通信速率方面的潜力。
With the increasing demand of wireless communication rate and the material growth and device fabrication, the THz communication has become an important direction for the development of high-speed wireless communication systems in the future. This paper introduces the characteristics of terahertz communication and the development of terahertz communication system in the world. It also reports the use of a THz QCL as the emitter and a THz QWP as the receiver Terahertz digital communication demonstration system. The system uses On-Off-Key (OOK) modulation and direct intensity detection, with a communication frequency of 3.9 THz, communication distance of 2.2 m and transmission rates up to 1 Mbps. Finally, the bandwidth limitations of the system and its potential in communication rate are discussed.