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5 October 2023 Slow light waveguide based on semiconductor valley photonic crystal
Satoshi Iwamoto, Hironobu Yoshimi, Kazuhiro Kuruma, Ryosuke Miyazaki, Yasutomo Ota
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Proceedings Volume PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI; PC126480F (2023) https://doi.org/10.1117/12.2676231
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Valley photonic crystal (VPhC) is one of the photonic nanostructures that can host topologically protected edge states. The edge states enable efficient light guiding even under sharp corners. At a bearded interface consisting of two topologically distinct VPhCs, the edge state can be an in-gap slow light mode while keeping its robustness against sharp corners. The loss at sharp waveguide bends is largely suppressed for the topological slow light mode, compared to the non-topological slow light mode. Here, we discuss the design and the experimental demonstration of topological slow light waveguides in semiconductor VPhCs.
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Satoshi Iwamoto, Hironobu Yoshimi, Kazuhiro Kuruma, Ryosuke Miyazaki, and Yasutomo Ota "Slow light waveguide based on semiconductor valley photonic crystal", Proc. SPIE PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI, PC126480F (5 October 2023); https://doi.org/10.1117/12.2676231
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KEYWORDS
Slow light
Waveguides
Semiconductors
Photonic crystals
Integrated photonics
Photonic integrated circuits
Photonic nanostructures
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