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In terahertz (THz) communications, most of the research work is focused on wireless systems, while waveguide/fiber-based links have been less explored. Although wireless communications have several advantages, the fiber-based communications provide superior performance in certain short-range communication applications with complex geometrical environments. In this work, we present an in-depth experimental and numerical study of the short-range THz communications links (carrier frequency:128 GHz) that use subwavelength dielectric fibers of varying diameters (0.57-1.75 mm) and up to 10 m for information transmission (up to 6 Gbps) and define main challenges and tradeoffs in the link implementation.
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Kathirvel Nallappan, Yang Cao, Guofu Xu, Hichem Guerboukha, Chahe Nerguizian, Maksim Skorobogatiy, "Subwavelength solid core dielectric terahertz fibers for short range communications," Proc. SPIE 11827, Terahertz Emitters, Receivers, and Applications XII, 1182705 (1 August 2021); https://doi.org/10.1117/12.2593927