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Updated: May 21, 2026
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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Local-nonlocal assisted multifunctional photonic crystals.
Wenjing Lv1, Haoye Qin2, Xiaodong Shi3
1Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China.
Light, Science & Applications
|May 19, 2026
Summary
This study introduces multifunctional photonic crystals (PhCs) that integrate local wavefront control with nonlocal bound states in the continuum (BICs). This novel design unifies metasurface capabilities with PhC resonances for advanced optical applications.
Area of Science:
- Photonics and Metamaterials
- Flat Optics and Wavefront Shaping
Background:
- Metasurfaces offer local control of light wavefronts.
- Photonic crystals (PhCs) exhibit nonlocal resonances like bound states in the continuum (BICs).
- Integrating these distinct optical regimes on a single platform is challenging.
Purpose of the Study:
- To develop a single platform unifying wavefront shaping and BICs.
- To create multifunctional photonic crystals by merging local and nonlocal optical phenomena.
Main Methods:
- Embedding meta-notches within PhC pillars to create local control.
- Utilizing spectral-zero-assisted topological phase for wavefront manipulation.
- Preserving high-quality factor (Q) nonlocal BIC modes.
Main Results:
- Successfully integrated local control (metasurfaces) with nonlocal resonances (PhCs).
- Achieved efficient 2π wavefront coverage while maintaining BIC confinement.
- Demonstrated a single planar device synthesizing design freedom and dispersive resonance.
Conclusions:
- The developed local-nonlocal assisted PhCs offer a unified approach for advanced optical functionalities.
- This integration extends flat optics capabilities, enabling multifunctional devices.
- Opens new avenues for higher-order topologies, advanced imaging, communication, and optical computing.
