Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1539862 | Optics Communications | 2008 | 5 Pages |
Abstract
Enhanced transmission through sub-wavelength hole arrays and a single sub-wavelength aperture with periodic corrugations surrounded have been investigated extensively. We report the similar phenomenon through a funnel-type aperture with a sub-wavelength outlet in a thick silver film, which was obtained numerically by using finite-difference time-domain method. Properties of the transmission spectrum can be modulated by geometric parameters of the funnel-type aperture. With periodic grooves or dielectric gratings on the output surface of the structure, beaming light emission can be obtained.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Zu-Bin Li, Jian-Guo Tian, Wen-Yuan Zhou, Wei-Ping Zang, Chun-Ping Zhang,