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Boosting topological zero modes using elastomer waveguide arrays

Angelina Frank, Daniel Leykam, Daria A. Smirnova, Dimitris G. Angelakis, and Alexander Ling

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Abstract

We employ the Su–Schrieffer–Heeger model in elastic polymer waveguide arrays to design and realize traveling topologically protected modes. The observed delocalization of the optical field for superluminal defect velocities agrees well with theoretical descriptions. We apply mechanical strain to modulate the lattices’ coupling coefficient. This work demonstrates a novel, to the best of our knowledge, platform for rapid prototyping of topological photonic devices and establishes strain-tuning as a viable design parameter for topological waveguide arrays.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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