Broadband THz modulators based on multilayer graphene on PVC
Date
2016
Advisor
Instructor
Source Title
Proceedings of the 41st International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2016
Print ISSN
2162-2027
Electronic ISSN
Publisher
IEEE
Volume
Issue
Pages
Language
English
Type
Conference Paper
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Abstract
In this study we present the direct terahertz time-domain spectroscopic measurement of CVD-grown multilayer graphene (MLG) on PVC substrate with an electrically tunable Fermi level. In a configuration consisting MLG and injected organic dopant, the transmitted intensity loss of terahertz radiation was observed with an applied voltage between 0 and 3.5 V. We showed that MLG on PVC devices provided approximately 100 % modulation between 0.2 and 1.5 THz at preferentially low operation voltage of ca. 3V. The observed modulation bandwidth in terahertz frequencies appears to be instrument limited.
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Keywords
Graphene, Modulation, Modulators, Multilayers, Electrically tunable, Modulation bandwidth, Multilayer graphene, Operation voltage, Spectroscopic measurements, Terahertz frequencies, Terahertz radiation, Transmitted intensities, Terahertz waves