Tunable topological edge modes in Su–Schrieffer–Heeger arrays
G. J. Chaplain, Antonio S. Gliozzi, Bryn Davies, David Urban, Emiliano Descrovi, Federico Bosia, Richard V. Craster
Abstract
A potential weakness of topological waveguides is that they act on a fixed narrow band of frequencies. However, by 3D printing samples from a photo-responsive polymer, we can obtain a device whose operating frequency can be fine-tuned dynamically using laser excitation. This greatly enhances existing static tunability strategies, typically based on modifying the geometry. We use a version of the classical Su–Schrieffer–Heeger model to demonstrate our approach.
Topics & Concepts
ExcitationEnhanced Data Rates for GSM EvolutionTopology (electrical circuits)PhysicsLaserOptoelectronicsMaterials scienceOpticsQuantum mechanicsComputer scienceMathematicsTelecommunicationsCombinatoricsTopological Materials and PhenomenaPhotonic and Optical DevicesPhotorefractive and Nonlinear Optics