Abstract

In this paper, an optimized four-nanowire rhombic nanoantenna (RNA) is proposed and numerically analyzed in terms of directivity and efficiency. The suggested design achieves a directivity of 23.4 with 84.5% radiation efficiency at a wavelength of 1550 nm. Further, the suggested nanoantenna (NA) design offers a high gain of 18.5 with an enhancement of 172%, compared to the previously reported plasmonic horn NA. Additionally, the wireless transmission power of the nanolink based on the optimized rhombic design is analyzed. The numerical results reveal that the RNA enjoys a much lower loss by 32 dB and 12 dB, respectively, when compared to the dipole and plasmonic horn NAs. Moreover, the reported design has broadband operation features over the optical C-band range, making it a promising candidate for applications related to optical communications nanochips.

© 2020 Optical Society of America

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