title: One way optical waveguides for matched non-reciprocal nanoantennas with dynamic beam scanning functionality.
abstract: Matching circuits for waveguide-nanoantenna connections are difficult to implement. However, if the waveguide permits only one-way propagation, the matching issue disappears since back-reflections cannot take place; the feed signal is converted to radiation at high efficiency. Hence, a terminated one-way waveguide may serve as an assembly consisting of a waveguide, a matching mechanism, and an antenna. Since one-way structures are inherently non-reciprocal, this antenna possesses different transmit and receive patterns. We test and demonstrate this concept on a recently suggested new class of one-way plasmonic waveguides and present an additional significant dynamic beam scanning functionality.
authors: School of Electrical Engineering, Tel Aviv University, Ramat-Aviv, Tel-Aviv 69978, Israel.
authors: Yakir
authors: Y
authors: Hadad
authors: Ben Z
authors: BZ
authors: Steinberg
mesh_terms: D004867:Equipment Design; D008027:Light; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*