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Imaging and steering an optical wireless nanoantenna link.
Daniel Dregely1, Klas Lindfors2, Markus Lippitz3
11] 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany [2] Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany [3].
Nature Communications
|July 5, 2014
Summary
Researchers demonstrated wireless optical power transfer using plasmonic nanoantennas. Beamsteering enabled signal routing to different receivers, paving the way for optical nanocircuits.
Area of Science:
- Photonics and Nanotechnology
- Optical Communication Systems
Background:
- Optical nanoantennas control optical signal transmission and reception.
- Nanoantennas are key for optical communication in nanocircuits due to their ability to direct optical radiation.
Purpose of the Study:
- To demonstrate wireless optical power transfer between plasmonic nanoantennas in the far-field.
- To show changeable signal routing to different nanoscopic receivers using beamsteering.
Main Methods:
- Far-field wireless optical power transfer measurement between plasmonic nanoantennas.
- Photoluminescence imaging to map the radiation pattern of single nanoantennas.
- Deterministic positioning of nanoscopic fluorescent receivers to quantify power transmission dependence on distance.
Main Results:
- Demonstrated beamsteering with directional control of transmitted radiation over a 29° range.
- Achieved wireless power transfer from a single transmitter to multiple receivers.
- Mapped unperturbed intensity distribution around plasmonic structures using photoluminescence.
Conclusions:
- Plasmonic nanoantennas enable efficient wireless optical power transfer and signal routing.
- Beamsteering capabilities are crucial for developing reconfigurable optical nanocircuits.
- The demonstrated techniques are vital for advancing nanoscale optical communication.
