Wireless sub-THz communication system with high data rate
Wireless sub-THz communication system with high data rate
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DOI：
10.1038/nphoton.2013.275
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发表时间：
2013-12-01
期刊：
影响因子：
35
通讯作者：
Kallfass, I.
中科院分区：
文献类型：
--
作者：
Koenig, S.;Lopez-Diaz, D.;Kallfass, I.
在通信中，0.1-30 THz的频率范围本质上是未知领域。最近，研究集中在太赫兹间隙上，因为高载波频率保证了前所未有的信道容量（1）。事实上，预计2015年的数据速率为100 Gbit s（-1）（2）。在这里，我们提出，为第一次，单输入和单输出的无线通信系统在237.5 GHz的传输数据超过20米的数据速率为100 Gbit s（-1）。这一突破是太赫兹光子学和电子学相结合的结果，其中窄带太赫兹载波是通过在单向传播载波光电二极管中混合锁模激光器的梳状线来光子产生的。然后，单行进载波光电二极管输出通过波束聚焦天线辐射。该信号由包括新颖的太赫兹混频器和放大器的毫米波单片集成电路接收。我们相信，这种方法提供了一种路径，以规模无线通信到Tbit s（-1）速率超过距离>1公里。
In communications, the frequency range 0.1-30 THz is essentially terra incognita. Recently, research has focused on this terahertz gap, because the high carrier frequencies promise unprecedented channel capacities(1). Indeed, data rates of 100 Gbit s(-1) were predicted(2) for 2015. Here, we present, for the first time, a single-input and single-output wireless communication system at 237.5 GHz for transmitting data over 20 m at a data rate of 100 Gbit s(-1). This breakthrough results from combining terahertz photonics and electronics, whereby a narrow-band terahertz carrier is photonically generated by mixing comb lines of a mode-locked laser in a uni-travelling-carrier photodiode. The uni-travelling-carrier photodiode output is then radiated over a beam-focusing antenna. The signal is received by a millimetre-wave monolithic integrated circuit comprising novel terahertz mixers and amplifiers. We believe that this approach provides a path to scale wireless communications to Tbit s(-1) rates over distances of >1 km.