ArticleLight, science & applications2024
Broadband and fabrication-tolerant 3-dB couplers with topological valley edge modes.
Article in Light, science & applications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Extreme-bandwidth valley photonic metamaterials approaching Dirac velocity.Nature communications · 2026Article
- Multiplexing Two Types of High-Order Topological Corner States in Kagome Lattice Photonic Crystals.Nanophotonics (Berlin, Germany) · 2026Article
- ZenBand: a numerical solver of photonic crystals with a graphical user interface.Scientific reports · 2026Article
- Quantum Valley Hall Effect-Based Coupler with Continuously Tunable Transmission for Topological Information Communication.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Monolithic Terahertz Topological Mach-Zehnder Interferometer.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Configurable topological photonic polycrystal based on a synthetic hybrid dimension.National science review · 2025Article
- Hyperbolic Topological Quantum Sources.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Topological guided-mode resonances: basic theory, experiments, and applications.Nanophotonics (Berlin, Germany) · 2025Review
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
3-dB couplers, which are commonly used in photonic integrated circuits for on-chip information processing, precision measurement, and quantum computing, face challenges in achieving robust performance due to their limited 3-dB bandwidths and sensitivity to fabrication errors. To address this, we introduce topological physics to nanophotonics, developing a framework for topological 3-dB couplers. These couplers exhibit broad working wavelength range and robustness against fabrication dimensional errors. By leveraging valley-Hall topology and mirror symmetry, the photonic-crystal-slab couplers achieve ideal 3-dB splitting characterized by a wavelength-insensitive scattering matrix. Tolerance analysis confirms the superiority on broad bandwidth of 48 nm and robust splitting against dimensional errors of 20 nm. We further propose a topological interferometer for on-chip distance measurement, which also exhibits robustness against dimensional errors. This extension of topological principles to the fields of interferometers, may open up new possibilities for constructing robust wavelength division multiplexing, temperature-drift-insensitive sensing, and optical coherence tomography applications.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.