Tunable dual-band terahertz metamaterial bandpass filters

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

Research output: Contribution to journalArticle

70 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 languageEnglish
Pages (from-to)2382-2384
Number of pages3
JournalOptics Letters
Volume38
Issue number14
DOIs
StatePublished - Jul 15 2013

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