ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Transparent Topological Meta-Diplexer via Tightly Confined Valley Surface States.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Topological photonics offers a powerful platform for robust wave manipulation. However, conventional topological devices rely on opaque substrates, limiting their use in applications requiring optical transparency, such as smart windows and transparent electronics. Here, we demonstrate tightly confined valley surface states (VSSs) in an optically transparent topological metasurface platform based on a hollow-snowflake-wire design. The proposed platform simultaneously achieves over 85% visible transparency, deep-subwavelength vertical confinement, and a footprint half that of conventional topological designs. The resulting VSSs exhibit strong robustness against structural discontinuities and high routing flexibility. By tailoring the edge unit cells, we realize a compact topological meta-diplexer with spatially and spectrally separated channels. Communication experiments under 64-QAM modulation confirm robust in-band transmission with error vector magnitude (EVM)
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