Broadband Extraordinary Transmission in a Single Sub-wavelength Aperture

Details Broadband Extraordinary Transmission in a Single Sub-wavelength Aperture Broadband Extraordinary Transmission in a Single Sub-wavelength Aperture

2010-07-08

arxiv.org/abs/1007.1349v1

Physics

Optics

9 pages, 8 figures

Scientific paper

Coordinate transformation is applied to design an all-dielectric device for Extraordinary Transmission (ET) in a single sub-wavelength slit. The proposed device has a broadband feature and can be applied from microwave to visible frequency bands. Finite-Difference Time-Domain (FDTD) simulations are used to verify the device's performance. The results show that significantly increased transmission is achieved through the sub-wavelength aperture from 4 GHz to 8 GHz when the device is applied. In contrast with previously reported systems, the frequency sensitivity of the new device is very low.

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