Tunable dual-band terahertz metamaterial bandpass filters

Yanhan Zhu; Subash Vegesna; Yong Zhao; Vladimir Kuryatkov; Mark Holtz; Zhaoyang Fan; Mohammad Saed; Ayrton A. Bernussi

doi:10.1364/OL.38.002382

Tunable dual-band terahertz metamaterial bandpass filters

Yanhan Zhu, Subash Vegesna, Yong Zhao, Vladimir Kuryatkov, Mark Holtz, Zhaoyang Fan, Mohammad Saed, Ayrton A. Bernussi

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

Abstract

We report metamaterial terahertz (THz) bandpass filters with tunable dual-band selectivity. The shift in the center frequency of the device is achieved by actively modifying the effective length of the resonators. This was realized by introducing vanadium dioxide (VO2) bridges interconnecting specific regions of each resonator. Raising the temperature across the phase transition shifted the resonance frequency by 2% due to changes in the electrical conductivity of the VO2. Measured THz transmission response of the proposed dual-band filter was in good correspondence with simulations.

Original language	English
Pages (from-to)	2382-2384
Number of pages	3
Journal	Optics Letters
Volume	38
Issue number	14
DOIs	https://doi.org/10.1364/OL.38.002382
State	Published - Jul 15 2013

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abstract = "We report metamaterial terahertz (THz) bandpass filters with tunable dual-band selectivity. The shift in the center frequency of the device is achieved by actively modifying the effective length of the resonators. This was realized by introducing vanadium dioxide (VO2) bridges interconnecting specific regions of each resonator. Raising the temperature across the phase transition shifted the resonance frequency by 2% due to changes in the electrical conductivity of the VO2. Measured THz transmission response of the proposed dual-band filter was in good correspondence with simulations.",

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AU - Vegesna, Subash

AU - Zhao, Yong

AU - Kuryatkov, Vladimir

AU - Holtz, Mark

AU - Fan, Zhaoyang

AU - Saed, Mohammad

AU - Bernussi, Ayrton A.

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JO - Optics Letters

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Tunable dual-band terahertz metamaterial bandpass filters

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