Recent progress in topological waveguides and nanocavities in a semiconductor photonic crystal platform [Invited]

Satoshi Iwamoto, Yasutomo Ota, Yasuhiko Arakawa

研究成果: Article査読

25 被引用数 (Scopus)

抄録

Topological photonics provides a novel route for designing and realizing optical devices with unprecedented functionalities. Topological edge states, which are supported at the boundary of two photonic systems with different band topologies, enable robust light transport immune to structural imperfections and/or sharp bends in waveguides. Furthermore, the topological edge states are expected to revolutionize cavity-based optical devices such as lasers. Optical devices with built-in topological protection with a small footprint are fascinating as on-chip optical devices for low-loss and functional photonic integrated circuits. Semiconductor photonic crystals are promising platforms enabling the miniaturization of topological optical devices. Herein, we review the recent realizations of semiconductor topological photonic crystals. In particular, we discuss topological waveguides in valley photonic crystals, which have received increasing attention because of their simple realization. In addition, we provide recent demonstrations of topological nanocavities, which are another key component of topological nanophotonics. Progress in semiconductor topological photonic crystals will propel the use of topological photonic devices in various applications as well as deepen the understanding of topological photonic phenomena at the wavelength scale.

本文言語English
ページ(範囲)319-337
ページ数19
ジャーナルOptical Materials Express
11
2
DOI
出版ステータスPublished - 2020
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料

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