Experimental demonstration of valley-Hall topological photonic crystal\n at telecommunication wavelengths

2017/12/19 by Mikhail I. Shalaev, Shalaev, Mikhail I., Wiktor Walasik +7
Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Photonic Crystals and Applications #Quantum optics and atomic interactions #Topological Materials and Phenomena

paper · pdf · doi:10.48550/arxiv.1712.07284

openalex publication_date 2017/12/19 · openalex created_date 2022/10/01 · openalex updated_date 2026/08/01

Abstract

Photonic topological insulators provide unprecedented possibilities to\neliminate scattering losses and improve the efficiency of optical communication\nsystems. Despite significant theoretical efforts, the experimental\ndemonstration of an integrated photonic topological insulator operating in the\ntelecommunication regime was still missing. Here, we design, fabricate and\ncharacterize a photonic-crystal-based topological structure that exhibits\nvalley-Hall effect. We experimentally demonstrate the propagation of\ntopologically protected edge states in a CMOS-compatible chip operating at\ntelecommunication wavelengths. This contribution is an important step towards\nintegrated topological photonics.\n

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