Abstract
The surface plasmon has been researched for many years and there are several methods to excite the surface waves [1, 2]. One way to generate a narrow spectral bandwidth is to use remotely exciting surface plasmon polaritons (SPP) grating nanostructures, e.g., r-grating structures [3]. Because of the character of the narrow spectral bandwidth and high near field intensity, r-grating structures are very facilitated useful for sensing applications. In the sensing regime, the directivity of nanoantenna attracts more attentions nowadays [4]. In this paper, we consider the stripe nanoantennas on the r-grating structures and simulate their electric field enhancements and analyze their far field properties.
© 2014 Japan Society of Applied Physics, Optical Society of America
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