Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27162
Title: Directional field enhancement of dielectric nano optical disc antenna arrays
Authors: Wang, I
Du, Y 
Keywords: Directivity
Disc antenna
Field enhancement
Nano antenna
Optical
Issue Date: 2011
Publisher: Elsevier Science Bv
Source: Optical materials, 2011, v. 34, no. 1, p. 126-130 How to cite?
Journal: Optical Materials 
Abstract: This paper presents a discussion on the directive field enhancement of dielectric disc antenna arrays in optical band. The property of dielectric material is addressed, and field modes in a cylindrical resonator are discussed. It is identified that the fundamental mode of HE 11δ generates the far field with a higher directivity than other modes. More effective field enhancement in the radiation direction could be achieved by using multiple-disc antenna arrays. Simulation examples indicate that the directivity of a disc antenna array varies with the disc spacing. The maximum directivity is observed when the disc spacing is approximately equal to the half of the vacuum wavelength. The maximum directivity can be improved significantly when the disc number is increased.
URI: http://hdl.handle.net/10397/27162
DOI: 10.1016/j.optmat.2011.07.027
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