[2] Vandrevala F, Einarsson E. Optics Express, 2018, 26(2): 1697.
[3] Wang Ying, Qi Feng, Wang Jinkuan. Optics Letters, 2021, 46(13): 3123.
[4] Zhang Jiyang, Ren Jiaojiao, Li Lijuan, et al. Optics Express, 2020, 28(14): 19901.
[5] Mao Qi, Liu Jinbo, Zhu Yunlong, et al. IEEE Transactions on Terahertz Science and Technology, 2021, 11(5): 583.
[6] Wang Yuye, Chen Linyu, Chen Tuan-an, et al. Journal of Physics D: Applied Physics, 2018, 51(32): 325101.
[7] Ning Wei, Qi Feng, Liu Zhaoyang, et al. Microwave and Optical Technology Letters, 2018, 60(10): 2492.
[11] Shin Hee-jun, Lim Min-Cheol, Park Kisang, Sensors(Basel, Switzerland), 2017, 17(12): 2825.
[13] Saxena A K, Srivastava K V. IEEE Transactions on Antennas and Propagation, 2016, 64(7 Pt. 2): 3055.
[14] Kim Y J, Jung K Y. IEEE Transactions on Antennas and Propagation, 2021, 69(10): 6600.