Towards topological protection based millimeter wave devices
Authors: Gentili GG., Pelosi G., Piccioli F., Selleri S.
Autors Affiliation: Politecn Milan, DEIB, Via Ponzio 34-5, I-20133 Milan, MI, Italy; Univ Firenze, DINFO, Via Santa Marta 3, I-50133 Florence, FI, Italy; CNR, INO, Via Nello Carrara 1, I-50019 Sesto Fiorentino, FI, Italy
Abstract: The feasibility of topological metawaveguides supporting helical propagation in the microwave range has been recently proven. The advantages of unidirectional propagation supported by such waveguides however can only be exploited in real devices if topological modes are endowed with the capability to interact within themselves as well as with trivial modes. Here we show a modal launcher to interface a topological metawaveguide with conventional circular waveguides with negligible reflection, and we exploit the properties of coupled topological modes to show a proof of concept of a topological contradirectional coupler.
Journal/Review: PHYSICAL REVIEW B
Volume: 100 (12) Pages from: 125108-1 to: 125108-8
KeyWords: MODE ANALYSIS; SPINDOI: 10.1103/PhysRevB.100.125108Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-12-05References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here