Resonant transmission and mode modulation of acoustic waves in H-shaped metallic gratings | Zendy

Yuqiang Deng | Zendy; DongXiang Qi | Zendy; RenHao Fan | Zendy; Kun Zhang | Zendy; RuWen Peng | Zendy

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Resonant transmission and mode modulation of acoustic waves in H-shaped metallic gratings

Author(s) -

Yuqiang Deng,

DongXiang Qi,

RenHao Fan,

Kun Zhang,

RuWen Peng

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4919675

Subject(s) - grating , optics , transmission (telecommunications) , miniaturization , modulation (music) , wavelength , diffraction grating , extraordinary optical transmission , physics , acoustic wave , materials science , diffraction , acoustics , surface plasmon polariton , surface plasmon , plasmon , telecommunications , computer science , nanotechnology

In this work, we demonstrate that resonant full transmission of acoustic waves exists in subwavelength H-shaped metallic gratings, and transmission peaks can be efficiently tuned by adjusting the grating geometry. We investigate this phenomenon through both numerical simulations and theoretical calculations based on rigorous-coupled wave analysis. The transmission peaks are originated from Fabry-Perot resonances together with the couplings between the diffractive wave on the surface and the multiple guided modes in the slits. Moreover, the transmission modes can be efficiently tuned by adjusting the cavity geometry, without changing the grating thickness. The mechanism is analyzed based on an equivalent circuit model and verified by both the theoretical calculations and the numerical simulations. This research has potential application in acoustic-device miniaturization over a wide range of wavelengths

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