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Updated: Feb 25, 2026
11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
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Strong coupling and vortexes assisted slow light in plasmonic chain-SOI waveguide systems.
Giovanni Magno1, Mickael Fevrier2,3, Philippe Gogol2
1Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud, Université Paris-Saclay, C2N - Orsay, 91405, Orsay cedex, France. giovanni.magno@c2n.upsaclay.fr.
Scientific Reports
|August 5, 2017
Summary
Researchers demonstrated strong coupling between metallic nanoparticle chains and dielectric waveguides, enabling broadband light manipulation and slower light propagation. This hybrid system allows for guiding light in previously impossible conditions.
Area of Science:
- Photonics
- Plasmonics
- Materials Science
Background:
- Metallic nanoparticle chains (MNP) support localized surface plasmons (LSP).
- Dielectric waveguides (DWG) are key components in photonic circuits.
- Coupling between plasmonic and dielectric structures is an active area of research.
Purpose of the Study:
- To demonstrate and characterize a strong coupling regime between MNPs and DWGs.
- To investigate the broadband and light-slowing properties of this hybrid system.
- To explore the potential for guiding light in unconventional scenarios.
Main Methods:
- Fabrication of MNP chains deposited directly onto DWGs.
- Optical characterization in the near-infrared spectrum.
- Analysis of mode hybridization and power overlap.
Main Results:
- Achieved strong coupling between MNPs and DWGs, evidenced by distinct supermodes and significant power overlap.
- Observed broadband strong coupling due to LSP properties.
- Demonstrated a light-slowing effect over a wide wavelength range via vortex-like power propagation.
- Showcased the formation of guided supermodes in regions where individual modes are not guided.
- Experimental evidence confirmed strong coupling irrespective of waveguide core index.
Conclusions:
- The demonstrated strong coupling regime offers novel ways to control light propagation.
- This hybrid plasmonic-dielectric system enables broadband light manipulation and enhanced light confinement.
- The findings suggest potential applications in advanced photonic devices and integrated optics.
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