|
|
|
|
|
|
Terahertz Phase Shifter Based on Grating-Liquid Crystal Hybrid Structure |
LONG Jie, LI Jiu-sheng* |
Centre for THz Research, China Jiliang University, Hangzhou 310018, China |
|
|
Abstract With the rapid development of terahertz technology and its application, the demand for various kinds of terahertz manipulation devices increases as one of the important components of the terahertz system, the terahertz wave phase shifter has become a research hotspot. The reported terahertz wave phase shifters have large size, complex structure and small phase shift problems. In order to overcome the above defects, we proposed a novel terahertz phase shifter based on a grating liquid crystal composite structure. It is composed of quartz layer, graphene layer, liquid crystal cell, grating structure, graphene layer and quartz layer. By changing the voltage on graphene, the refractive index of the liquid crystal can be varied, and the phase of the proposed terahertz phase shifter will change due to the change of refractive index. Then, the phase shift of the proposed terahertz wave phase shifter can be effectively adjusted by controlling the externally applied voltage. The simulation results show that the phase shifter achieves 400° phase shift in the frequency range from 0.39 to 0.46 THz, and the return loss is less than -11 dB. The maximum phase shift is 422° at a frequency of 0.43 THz. When the incident angle of the terahertz wave varies from 0 ° to 30 °, the phase shift of the proposed phase shifter remains unchanged. In addition, the device is insensitive to the polarization state of the incident terahertz wave. The designed terahertz phase shifter has the advantages of a large phase shift and small structure size. It has widespread applications prospects in the future terahertz communication, security inspection, medical, sensing, imaging, etc.
|
Received: 2020-08-26
Accepted: 2020-12-12
|
|
Corresponding Authors:
LI Jiu-sheng
E-mail: jshli@126.com
|
|
[1] Buchnev O, Podoliak N, Kaczmarek M, et al. Adv. Opt. Mater., 2015, 3: 595.
[2] Xiang W, Huang X, Li D, et al. Opt. Lett., 2020, 45: 1978.
[3] Spada L, Vegni L. Opt. Express, 2016, 24: 5763.
[4] LING Fang, MENG Qing-long, HUANG Ren-shuai, et al(凌 芳, 孟庆龙, 黄人帅, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2017, 37(5): 1334.
[5] Li S, Liu H, Sun Q, Huang N. IEEE Photonics Technol. Lett., 2015, 27: 752.
[6] Tsai T, Chen C, Pan R, et al. IEEE Microwave and Wireless Components Letters, 2004, 14(2): 77.
[7] Yang C, Tang T, Pan R. Applied Physics Letters, 2014, 104(14): 141106.
[8] Yang L, Fan F, Chen M. Optical Materials Express, 2016, 6(9): 2803.
[9] Chodorow U, Parka J, Strzezysz O, et al. Molecular Crystals and Liquid Crystals, 2017, 657(1): 51.
[10] Yang J, Xia T, Jing S. J. Infrared Millimeter & Terahertz Waves, 2018, 39(5): 439.
[11] Du Y, Tian H, Cui X, et al. J. Materials Chemistry C: Materials for Optical & Electronic Devices, 2016, 4(19): 4138.
[12] Yang C, Kuo C, Chen P, et al. Appl. Sci., 2019, 9: 271.
[13] Hori Y, Asai K, Fukai M. IEEE Trans. Electron. Device., 1979, 26(11): 1734. |
[1] |
WAN Mei, ZHANG Jia-le, FANG Ji-yuan, LIU Jian-jun, HONG Zhi, DU Yong*. Terahertz Spectroscopy and DFT Calculations of Isonicotinamide-Glutaric Acid-Pyrazinamide Ternary Cocrystal[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3781-3787. |
[2] |
WU Jing-zhi1, 2, ZHOU Si-cheng3, JI Bao-qing1, WANG Yan-hong1, 2*, LI Meng-wei2, 3. Porosity Measurement of Tablets Based on Continuous Terahertz Wave[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3360-3364. |
[3] |
MU Da1, 2, WANG Qi-shu1, 2*, CUI Zong-yu1, 2, REN Jiao-jiao1, 2, ZHANG Dan-dan1, 2, LI Li-juan1, 2, XIN Yin-jie1, 2, ZHOU Tong-yu3. Study on Interference Phenomenon in Terahertz Time Domain
Spectroscopy Nondestructive Testing of Glass Fiber Composites[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3031-3040. |
[4] |
LI Yang1, LI Xiao-qi1, YANG Jia-ying1, SUN Li-juan2, CHEN Yuan-yuan1, YU Le1, WU Jing-zhu1*. Visualisation of Starch Distribution in Corn Seeds Based on Terahertz Time-Domain Spectral Reflection Imaging Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2722-2728. |
[5] |
YU Yang1, ZHANG Zhao-hui1, 2*, ZHAO Xiao-yan1, ZHANG Tian-yao1, LI Ying1, LI Xing-yue1, WU Xian-hao1. Effects of Concave Surface Morphology on the Terahertz Transmission Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2843-2848. |
[6] |
ZHENG Zhi-jie1, LIN Zhen-heng1, 2*, XIE Hai-he2, NIE Yong-zhong3. The Method of Terahertz Spectral Classification and Identification for Engineering Plastics Based on Convolutional Neural Network[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(05): 1387-1393. |
[7] |
LIU Hong-yuan1, WU Bin1, 2, JIANG Tao3, YANG Yan-zhao1, WANG Hong-chao1, LI Jing-song1. Study on the Measurement of Absolute Spectral Responsivity of Terahertz Detector[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1017-1022. |
[8] |
WANG Yu-ye1, 2, LI Hai-bin1, 2, JIANG Bo-zhou1, 2, GE Mei-lan1, 2, CHEN Tu-nan3, FENG Hua3, WU Bin4ZHU Jun-feng4, XU De-gang1, 2, YAO Jian-quan1, 2. Terahertz Spectroscopic Early Diagnosis of Cerebral Ischemia in Rats[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 788-794. |
[9] |
ZHANG Liang1, ZHANG Ran2, CUI Li-li3, LI Tao1, GU Da-yong4, HE Jian-an2*, ZHANG Si-xiang1*. Rapid Modification of Surface Plasmon Resonance Sensor Chip by
Graphene Oxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 795-800. |
[10] |
CHU Zhi-hong1, 2, ZHANG Yi-zhu2, QU Qiu-hong3, ZHAO Jin-wu1, 2, HE Ming-xia1, 2*. Terahertz Spectral Imaging With High Spatial Resolution and High
Visibility[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 356-362. |
[11] |
LI Qing-jun, SHEN Yan, MENG Qing-hao, WANG Guo-yang, YE Ping, SU Bo*, ZHANG Cun-lin. Terahertz Absorption Characteristics of Potassium Salt Solution Based on Microfluidic Chip[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 363-367. |
[12] |
ZHANG Tian-yao1, 2, LI Bo-yang1, LI Xing-yue1, LI Ying1, WU Xian-hao1, ZHAO Xiao-yan1, ZHANG Zhao-hui1*. Refractive Index Measurement Using Continuous Wave Terahertz
Frequency-Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 495-502. |
[13] |
LU Xue-jing1, 2, GE Hong-yi2, 3, JIANG Yu-ying2, 3, ZHANG Yuan3*. Application Progress of Terahertz Technology in Agriculture Detection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(11): 3330-3335. |
[14] |
ZHAO Xin-yuan, WANG Guo-yang, MENG Qing-hao, ZHANG Feng-xuan, SHAO Si-yu, DING Jing, SU Bo*, ZHANG Cun-lin. Terahertz Transmission Characteristics of Magneto-Fluidic Carrier Liquid Based on Microfluidic Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3012-3016. |
[15] |
CAO Yu-qi2, KANG Xu-sheng1, 2*, CHEN Piao-yun2, XIE Chen2, YU Jie2*, HUANG Ping-jie2, HOU Di-bo2, ZHANG Guang-xin2. Research on Discrimination Method of Absorption Peak in Terahertz
Regime[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3058-3062. |
|
|
|
|