ArticleLight, science & applications2022
Ultracompact topological photonic switch based on valley-vortex-enhanced high-efficiency phase shift.
Article in Light, science & applications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Kirigami-actuated reconfigurable topological photonic crystals.Nature communications · 2026Article
- Towards universal multi-dimensional parallelization communications by direct diverse fiber/3D/2D chip hybrid integration.Nature communications · 2026Article
- Multiple Brillouin zone folding based broadband topological slow light in valley photonic crystals.Fundamental research · 2026Article
- Emergent Berry Curvature in Inversion-Symmetric Photonic Crystals for Ultraconfined Topological States.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Topological quantum cascade laser with Dirac-scaled valley edge modes.Nature communications · 2025Article
- Robust transport of high-speed data in a topological valley Hall insulator.Nanophotonics (Berlin, Germany) · 2025Article
- Quantum Valley Hall Effect-Based Coupler with Continuously Tunable Transmission for Topological Information Communication.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism.Nature communications · 2025Article
- Hyperbolic Topological Quantum Sources.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Terahertz Metamaterials Inspired by Quantum Phenomena.Research (Washington, D.C.) · 2025Review
- Coupling-Controlled Photonic Topological Ring Array.ACS photonics · 2024Article
- Thermally tunable add-drop filter based on valley photonic crystals for optical communications.Nanophotonics (Berlin, Germany) · 2024Article
- Broadband and fabrication-tolerant 3-dB couplers with topological valley edge modes.Light, science & applications · 2024Article
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Authors and funding
10 authors.
Funding
Abstract
Topologically protected edge states based on valley photonic crystals (VPCs) have been widely studied, from theoretical verification to technical applications. However, research on integrated tuneable topological devices is still lacking. Here, we study the phase-shifting theory of topological edge modes based on a VPC structure. Benefiting from the phase vortex formed by the VPC structure, the optical path of the topological edge mode in the propagation direction is approximately two-fold that of the conventional optical mode in a strip waveguide. In experiments, we show a 1.57-fold improvement in π-phase tuning efficiency. By leveraging the high-efficiency phase-shifting properties and the sharp-turn features of the topological waveguide, we demonstrate an ultracompact 1 × 2 thermo-optic topological switch (TOTS) operating at telecommunication wavelengths. A switching power of 18.2 mW is needed with an ultracompact device footprint of 25.66 × 28.3 μm in the wavelength range of 1530-1582 nm. To the best of our knowledge, this topological photonic switch is the smallest switch of any dielectric or semiconductor 1 × 2/2 × 2 broadband optical switches, including thermo-optic and electro-optic switches. In addition, a high-speed transmission experiment employing the proposed TOTS is carried out to demonstrate the robust transmission of high-speed data. Our work reveals the phase-shifting mechanism of valley edge modes, which may enable diverse topological functional devices in many fields, such as optical communications, nanophotonics, and quantum information processing.
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