Journal
OPTICS LETTERS
Volume 39, Issue 11, Pages 3204-3207Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.39.003204
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Funding
- National Natural Science Foundation of China [61275030, 61205030, 61235007]
- Qianjiang River Fellow Fund of Zhejiang Province
- Scientific Research Foundation for the Returned Overseas Chinese Scholars from the State Education Ministry
- Opened Fund of State Key Laboratory of Advanced Optical Communication Systems and Networks
- Fundamental Research Funds for the Central Universities [2014QNA5020]
- Doctoral Fund of Ministry of Education of China [20120101120128]
- Swedish Research Council (VR)
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In this Letter, plasmonic sectoral horn nanoantennas working at near-infrared wavelength (1550 nm) have been investigated. We demonstrate that, although there are certain differences between the plasmonic and classical radio-frequency (RF) sectoral horn antennas, the plasmonic horns still possess a number of attractive features, like their RF counterparts, such as tunable high directivities, simplicity in fabrication, and ease of coupling to waveguides. As a specific application, we further show how to exploit these findings to optimize an optical wireless nanolink using the proposed horn nanoantennas, and obtain a 60-fold increase in the received power compared with the situation of matched dipole nanoantennas. (C) 2014 Optical Society of America
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