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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.89: Poster
Mittwoch, 16. März 2011, 17:30–21:00, P4
Plasmonic antennas and wireless interconnects on a subwavelength scale — •Daniel Ploss1,2,3, Arian Kriesch1,2,3, Jing Wen1,2, and Ulf Peschel1,2 — 1MPI für die Physik des Lichts, Erlangen, Germany — 2Friedrich-Alexander-Universtität Erlangen-Nürnberg, Erlangen, Germany — 3Erlangen Graduate School in Advanced Optical Technologies (SAOT)
Wireless transfer of electromagnetic radiation requires antennas with well-designed directivity and high efficiency. In optics those antennas offer particularly interesting applications in the intermediate domain between the far- and near- field; integrating wireless transfer channels with highly confined plasmonic circuitry can significantly decrease losses, thus avoiding the major disadvantage of nanoplasmonics. We report on optical antennas loaded with nanostructures under investigation and which are optimized for low reflection at the connection. Different types of antennas were designed and simulated with Finite Elements Methods (FEM), and their estimated performance finally compared with experimental results. A concept for engineering exceptionally high directionality are Yagi-Uda antennas, well known from the radio-frequency range. We intend to use them as wireless interconnects between highly packed, plasmonic waveguide structures. Hence, carefully designed antennas can not only be used to transfer the far field to the near field, but also for optimizing the arrangement of waveguide structures and for allowing more efficient, less lossy configurations.