| 1 | Modulators for Terahertz Communication: The Current State of the Art显示文摘With the increase of communication frequency,terahertz(THz)communication technology has been an important research feld;particularly the terahertz modulator is becoming one of the core devices in THz communication system.Te modulation performance of a THz communication system depends on the characterization of THz modulator.THz modulators based on diferent principles and materials have been studied and developed.However,they are still on the way to practical application due to low modulation speed,narrow bandwidth,and insufcient modulation depth.Terefore,we review the research progress of THz modulator in recent years and evaluate devices critically and comprehensively.We focus on the working principles such as electric,optical,optoelectrical,thermal,magnetic,programmable metamaterials and nonlinear modulation methods for THz wave with semiconductors,metamaterials,and 2D materials(such as graphene,molybdenum disulfde,and tungsten disulfde).Furthermore,we propose a guiding rule to select appropriate materials and modulation methods for specifc applications in THz communication. | Z.T.Ma Z.X.Geng Z.Y.Fan J.Liu H.D.Chen | 2019 | Research2019，，1： | 4 |
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