Photonics-Assisted Terahertz-Wave Beam Steering and Its Application in Secured Wireless Communication
Photonics-Assisted Terahertz-Wave Beam Steering and Its Application in Secured Wireless Communication
复制标题
DOI：
10.3390/photonics9010009
复制
发表时间：
2021-12
期刊：
影响因子：
2.4
通讯作者：
K. Kato
中科院分区：
文献类型：
--
作者：
K. Kato
波束形成和波束控制是高频电磁波实际应用的必然技术。具体而言，对于100 GHz以上的太赫兹波，使用相控阵的波束控制技术对于实现高速无线通信的未来是必要的。通过光混频，这是一种很有前途的产生太赫兹波的方法，所产生的波的相位可以在光域中调谐，使得来自相控阵列的光束可以通过光子技术来控制。通过引导太赫兹波的波束，不仅能够提高功率效率，还能够提高无线传输的物理层的安全性，从而改善无线通信。利用这一优点，并在接收端使用相干检测，提出了一种安全的无线通信系统，并在可行性实验中证明了基本机制。
Beam forming and beam steering are inevitable technologies for the practical application of high-frequency electromagnetic waves. Specifically, beam control technology using a phased array for terahertz waves above 100 GHz is necessary to realize the future of high-speed wireless communication. By photomixing, which is a promising method for generating terahertz waves, the phase of the generated waves can be tuned in the optical domain, so that the beam from the phased array can be controlled by photonics technologies. Directing the beam of a terahertz wave enables wireless communication to be improved not only via an increase in power efficiency but also in security in the physical layer of the wireless transmission. By utilizing this advantage and using coherent detection at the receiver, a secured wireless communication system is proposed, and the fundamental mechanism is demonstrated in a feasibility experiment.