Experimental Realization of a Reflections-Free Compact Delay Line Based on a Photonic Topological Insulator.

ABSTRACT: Electromagnetic (EM) waves propagating through an inhomogeneous medium are generally scattered whenever the medium's electromagnetic properties change on the scale of a single wavelength. This fundamental phenomenon constrains how optical structures are designed and interfaced with each other. Recent theoretical work indicates that electromagnetic structures collectively known as photonic topological insulators (PTIs) can be employed to overcome this fundamental limitation, thereby paving the way for ultra-compact photonic structures that no longer have to be wavelength-scale smooth. Here we present the first experimental demonstration of a photonic delay line based on topologically protected surface electromagnetic waves (TPSWs) between two PTIs which are the EM counterparts of the quantu

SUBMITTER: Lai K 

PROVIDER: S-EPMC4921924 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature