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  • Received: Jul. 26, 2013

    Accepted: --

    Posted: Feb. 1, 2014

    Published Online: Jan. 21, 2014

    The Author Email: Huayue Li (huayueli1987@163.com)

    DOI: 10.3788/aos201434.0223003

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    Li Huayue, Liu Jianjun, Han Zhanghua, Hong Zhi. Terahertz Metamaterial Analog of Electromagnetically Induced Transparency for a Refractive-Index-Based Sensor[J]. Acta Optica Sinica, 2014, 34(2): 223003

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Acta Optica Sinica, Vol. 34, Issue 2, 223003 (2014)

Terahertz Metamaterial Analog of Electromagnetically Induced Transparency for a Refractive-Index-Based Sensor

Huayue Li*, Jianjun Liu, Zhanghua Han, and Zhi Hong

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  • [in Chinese]

Abstract

The analogue of electromagnetically induced transparency (EIT) is achieved in a planar terahertz resonator consisting of a square closed loop (SCL) and a split ring resonator (SRR). Finite difference time domain simulations are carried out to analyze the EIT-like effect and its potential applications as a refractive-index-based sensor. Results show that the EIT-like resonance exhibits high refractive-index sensitivity and a high figure of merit (FOM) of 4.06, higher than that for SCL (0.09) or SRR (2.48) resonators. The refractive index and dielectric loss of the substrate, which influence the sensing performance of the SCL/SRR resonator, are studied, too. A device of the SCL/SRR resonator is fabricated by using laser-induced and chemical non-electrolytic plating with copper on polyimide film. Test results conincide with simulations.

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