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Proceedings Paper

An effective THz modulator with graphene tuned under low voltage with polyethylene oxide-based electrolytes
Author(s): Qianying Zheng; Linlong Tang; Liangping Xia; Chunlei Du; Hongliang Cui
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Paper Abstract

A kind of terahertz amplitude modulation structure has been proposed in this work, which could achieve ~75% modulation depth of transmittance under 10V gate voltage. It is attributed to two side factors, one is making use of metallic metamaterial array which excites terahertz resonance and enhances the interaction between the terahertz wave and graphene. Therefore, the modulation of terahertz transmission could be enhanced. The other factor is adopting polyethylene oxide-based electrolytes, as a kind of high capacitance material to effectively tuned chemical potential of graphene layer which acts as the active material modulating the transmitted energy.

Paper Details

Date Published: 18 November 2019
PDF: 8 pages
Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111961C (18 November 2019); doi: 10.1117/12.2537569
Show Author Affiliations
Qianying Zheng, Chongqing Institute of Green and Intelligent Technology (China)
Univ. of Chinese Academy of Sciences (China)
Linlong Tang, Chongqing Institute of Green and Intelligent Technology (China)
Liangping Xia, Chongqing Institute of Green and Intelligent Technology (China)
Yangtze Normal Univ. (China)
Chunlei Du, Chongqing Institute of Green and Intelligent Technology (China)
Univ. of Chinese Academy of Sciences (China)
Hongliang Cui, Chongqing Institute of Green and Intelligent Technology (China)


Published in SPIE Proceedings Vol. 11196:
Infrared, Millimeter-Wave, and Terahertz Technologies VI
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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