Real-time video signal transmission over a terahertz communication link

被引：16
|
作者：
Chen, Zhen [1 ]
Gu, Li [1 ]
Tan, Zhiyong [1 ]
Wang, Chang [1 ]
Cao, Juncheng [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Key Lab Terahertz Solid State Technol, Shanghai 200050, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2013年 / 11卷 / 11期
基金：
中国国家自然科学基金;
关键词：
QUANTUM-WELL PHOTODETECTOR;
D O I：
10.3788/COL201311.112001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A 2.4-m communication link operating at 3.9 THz based on a terahertz quantum cascade laser and a terahertz quantum well photodetector (THz QWP) are introduced. The lumped electrical models of THz QWP for small signals are presented. A discussion of the bandwidth limit of the detecting circuit is presented. Using direct on - off-keying modulation and intensity detection, the transmission of digital video signal with a data rate of 2.5 Mb/s is demonstrated. Pseudo-random binary sequences are transmitted to investigate the bit-error rate (BER) at different rates. Result shows the error free transmission when the rate is below 5 Mb/s.
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页数：3
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