Laser & Optoelectronics Progress, Volume. 59, Issue 13, 1300007(2022)
Research Progress of Terahertz Wave in 6G Communication Network
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![Application scenarios of bidirectional terahertz multi beam control device[52]. (a) Application scenario of reflection mode; (b) application scenario of transmission mode](/Images/icon/loading.gif){kind=icon}
Fig. 1. Application scenarios of bidirectional terahertz multi beam control device[52]. (a) Application scenario of reflection mode; (b) application scenario of transmission mode
Fig. 2. Comparison of power distributions in different cases[56]. (a) No IRS case; (b) IRS control case
Fig. 4. Effect of optical doping on nonlinear terahertz response[61]. (a) Schematic diagram of 400 nm pumped terahertz probe system. 400 nm pumped terahertz waves are irradiated onto 13.3 ps super surface after pumping; (b) inter-valley scattering occurs after irradiation of strong terahertz waves, which reduces mobility of electrons; (c) schematic diagram of super surface
Table 1. Terahertz devices and their characteristics
View tableTable 1. Terahertz devices and their characteristics
Terahertz device Feature Application Reference Multi-hole core photonic crystal fiber 75.28% high core power；superior optical parameters，high birefringence，high fidelity；low bending loss Long-range，high data rate，terahertz broadband communications Upadhyay et al.［ 29 ］Terahertz guided-mode resonant trap filter Variable filter strength；high quality factor；low refractive index；low absorption loss Terahertz long-distance communication，sensing，etc. Bark et al.［ 30 ］Dual parallel Mach-Zendel modulator Reduces signal processing complexity and system cost by eliminating the need for pre-coding techniques and digital-to-analog conversion Generate wide spectrum orthogonal phase shift keyed vector signals Yang et al.［ 31 ］Bandstop filter Narrow bandwidth；deep band resistance；polarization insensitive Terahertz communications，terahertz modulation devices，terahertz imaging，etc. Zhang et al.［ 32 ］Tunneling field effect transistors for sensitive terahertz detection High sensitivity；electrically tunable energy band structure；high responsiveness and low noise detection Fast and sensitive wireless communication detector Gayduchenko et al.［ 33 ］Ultra compact integrated terahertz modulator High modulation depth；transmissive adjustable Compact modulator Kim et al.［ 34 ］Homogenizing rectifier Precise manipulation of class II Dirac Fermionic states；wide-band operation；high dynamic range High-frequency operation in polarization-sensitive sensing，communications and imaging Zhang et al.［ 35 ］Flexible terahertz metamaterial devices Dynamic terahertz control at the picosecond time scale；optical control of the Fano resonance state High-efficiency terahertz communication devices，terahertz neuromorphic photonics and smart sensor systems Pitchappa et al.［ 36 ］Ultra-broadband silicon plasma organic hybrid modulator Up to 50 Gbit/s line rate；0.2885 THz carrier frequency；direct conversion of data streams between terahertz and optical domains Integration of terahertz wireless links with fiber optic infrastructure Ummethala et al.［ 37 ］
Table 2. Antennas and their characteristics
View tableTable 2. Antennas and their characteristics
Antenna Feature Application Reference Super directivity terahertz photoconductive antenna Dielectric resonator enhances directionality；spherical cover as dielectric resonant antenna；efficiency and radiation directionality improved Optimal design of super directional antenna Lu et al.［ 40 ］MIMO antenna array Improved isolation between MIMO antenna units；corrected operating frequency and radiation direction maps Electronic products Song et al.［ 41 ］Microstrip array antenna Enhanced antenna gain；suitable bandwidth and directionality；communication range can exceed 0.1 km Short-range 6G cellular communication system Nissanov et al.［ 42 ］Fractal chip antenna Field emission intensity is independent of frequency；generates fractal electromagnetic fields in the far field Wireless nanonetworks；terahertz wireless communications Blackledge et al.［ 43 ］Yagi-Uda antenna array Adjustable frequency response；reconfigurable directional map Television broadcasting and telecommunication，biomedical and imaging technologies，etc. Yadav et al.［ 44 ］Terahertz patch antenna Gain improvement；channel capacity enhancement；additional channel capacity can be modified Indoor communication scenarios Temmar et al.［ 45 ］
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Li Li, Hongyi Ge, Yuying Jiang, Guangming Li, Lü Ming, Fei Wang, Yuan Zhang. Research Progress of Terahertz Wave in 6G Communication Network[J]. Laser & Optoelectronics Progress, 2022, 59(13): 1300007
Paper Information
Category: Reviews
Received: Dec. 13, 2021
Accepted: Jan. 14, 2022
Published Online: Jun. 9, 2022
The Author Email: Hongyi Ge (gehongyi2004@163.com), Yuying Jiang (jiangyuying11@163.com), Yuan Zhang (zy_haut@163.com)
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