Using self-collimated wave-guiding in invisibility cloaks

Saeid Jamilan; Elena Semouchkina

doi:10.1117/12.2596457

18 April 2021 Using self-collimated wave-guiding in invisibility cloaks

Saeid Jamilan, Elena Semouchkina

Proceedings Volume 11769, Metamaterials XIII; 117690K (2021) https://doi.org/10.1117/12.2596457
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

We employ the known in photonic crystals phenomenon of self-collimation (SC) for modifying the performance of invisibility cloaks composed of dielectric rod arrays. Incorporation in the cloak design two circular sections, supporting SC, allows for refusing from Transformation Optics (TO) based prescriptions for the cloak medium, which request too challenging material parameters. In addition to SC sections, unidirectional cloak contains two TO-based transition sections with easily realizable parameters of rod arrays. These sections control wave paths between cloak input and output and SC sections. At plane wave incidence, the designed cloak was found to provide as restoration of initial flat wavefront behind the hidden object, so significant reduction of wave scattering by the object.

Conference Presentation

Citation Download Citation

Saeid Jamilan and Elena Semouchkina "Using self-collimated wave-guiding in invisibility cloaks", Proc. SPIE 11769, Metamaterials XIII, 117690K (18 April 2021); https://doi.org/10.1117/12.2596457

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