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Proceedings Paper

Terahertz isolator in asymmetry magneto-metasurface
Author(s): Sai Chen; Fei Fan; Pengfei Wu; Bo Liu; Shengjiang Chang
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Paper Abstract

In this paper, we have reviewed our research on terahertz (THz) isolators and nonreciprocal transmission devices. In addition, we present a new kind of THz isolator based on asymmetry magneto-metasurface. A structured InSb layer coats on the silica substrate in which the numerical simulation shows that this metasurface has isolation over 60dB at 0.646 THz and a 10dB operating bandwidth of 13 GHz under an external magnetic field of 0.3T with an insertion loss less than 2.5dB. This kind of low-loss, high isolation, easy coupling THz magneto-metasurface isolator has broadly potentials for THz application systems. Importantly, we discuss and conclude the necessary conditions of forming THz nonreciprocal transmission in the magneto-material devices, which is strongly related with magneto-material and asymmetric transmission system.

Paper Details

Date Published: 13 May 2015
PDF: 7 pages
Proc. SPIE 9483, Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense, 948302 (13 May 2015); doi: 10.1117/12.2176787
Show Author Affiliations
Sai Chen, Nankai Univ. (China)
Fei Fan, Nankai Univ. (China)
Pengfei Wu, Nankai Univ. (China)
Bo Liu, Nankai Univ. (China)
Shengjiang Chang, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 9483:
Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense
Mehdi F. Anwar; Thomas W. Crowe; Tariq Manzur, Editor(s)

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