ArticleScience advances2024
Ultralow-loss optical interconnect enabled by topological unidirectional guided resonance.
Article in Science advances, 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.
- High-Order Janus Bound States in the Continuum Assisted by Unidirectional Guided Resonances.Nanophotonics (Berlin, Germany) · 2026Article
- Robust single-mode laser via merging bound state in the continuum.Light, science & applications · 2026Article
- Advances in waveguide to waveguide couplers for 3D integrated photonic packaging.Light, science & applications · 2026Review
- Full Asymmetric Radiation Control Through Multi-Channel Bound States in the Continuum.Nanophotonics (Berlin, Germany) · 2026Article
- Highly coherent organic lasing based on etch-free metasurface.Nature communications · 2025Article
- Dual slow-light enhanced photothermal gas spectroscopy on a silicon chip.Nature communications · 2025Article
- Topological guided-mode resonances: basic theory, experiments, and applications.Nanophotonics (Berlin, Germany) · 2025Review
- Unidirectional Chiral Emission via Twisted Bi-layer Metasurfaces.Nature communications · 2024Article
Corrections and comments
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Authors and funding
9 authors.
Funding
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Abstract
Grating couplers that interconnect photonic chips to off-chip components are crucial for various optoelectronics applications. Despite numerous efforts in past decades, the existing grating couplers are still far from optimal in energy efficiency and thus hinder photonic integration toward a larger scale. Here, we propose a strategy to achieve ultralow-loss grating couplers by using unidirectional guided resonances (UGRs), suppressing the useless downward radiation with no mirror on the bottom. By engineering the dispersion and apodizing the geometry of grating, we experimentally realize a grating coupler with a record-low loss of -0.34 dB and 1-dB bandwidth exceeding 30 nm at the telecom wavelength of 1550 nm and further demonstrate an optic via with a loss of only -0.94 dB. Given that UGRs ubiquitously exist in a variety of grating geometries, our work sheds light on a systematic method to achieve energy-efficient optical interconnect and paves the way to large-scale photonic integration.
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Registered trials
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