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Proceedings Paper

Tunable terahertz power divider based on graphene plasmonic waveguide
Author(s): Yang Li; Jian-Rong Hu; Jiu-Sheng Li
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Paper Abstract

We present an ultra-compact gate-voltage-controlled terahertz power divider based on graphene plasmonic waveguide, which consists of five graphene ribbons embedded in the polymethylmethacrylate (PMMA) substrate. We have theoretically explained their mechanisms as bias voltage change induced carrier density of graphene modification and the coupling coefficients of graphene plasmon effect after carrier density change, respectively. The surface plasmonic polariton (SPP) propagation and extinction ratio in the graphene-based device are numerically investigated. The proposed terahertz power divider has a 3dB working band about 0.1THz and its extinction ratio reaches about 39.86dB at the frequency of 7THz. It anticipated that our proposed compact device is potentially interesting for the terahertz wave integrated circuit technology.

Paper Details

Date Published: 3 November 2016
PDF: 6 pages
Proc. SPIE 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV, 100302M (3 November 2016); doi: 10.1117/12.2247131
Show Author Affiliations
Yang Li, China Jiliang Univ. (China)
Jian-Rong Hu, China Jiliang Univ. (China)
Jiu-Sheng Li, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 10030:
Infrared, Millimeter-Wave, and Terahertz Technologies IV
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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