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Related Experiment Video

Updated: Oct 17, 2025

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

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Waveguide efficient directional coupling and decoupling via an integrated plasmonic nanoantenna.

Guillaume Blanquer, Vivien Loo, Nancy Rahbany

    Optics Express
    |October 7, 2021
    PubMed
    Summary

    This study characterizes a hybrid dielectric/plasmonic waveguide for enhanced light-matter interaction. The device demonstrates strong directionality, enabling efficient coupling between single emitters and optical waveguides.

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    Area of Science:

    • Nanoscale light-matter interaction
    • Integrated photonics
    • Plasmonics

    Background:

    • Advancements in integrated photonic devices are crucial for nanoscale light-matter interaction.
    • Efficient optical confinement and propagation require effective coupling between single photon emitters and optical waveguides.

    Purpose of the Study:

    • To characterize a hybrid dielectric/plasmonic waveguide for enhanced light confinement and propagation.
    • To demonstrate the strong directionality of a gold triangular nanoantenna on a TiO2 waveguide.
    • To highlight the plasmonic antenna's capability for strong coupling between single emitters and waveguides.

    Main Methods:

    • Experimental characterization of a hybrid waveguide.
    • Utilizing a gold triangular nanoantenna on a TiO2 waveguide.

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  • Comparing scattered intensity with a Scanning Near-field Optical Microscopy (SNOM) tip under different illumination geometries.
  • Numerical simulations to analyze coupling efficiency.

    • Main Results:

    • Experimental demonstration of strong directionality in the hybrid device.
    • Quantification of directionality by comparing scattered light intensity.
    • Numerical evidence of the plasmonic antenna's ability to generate powerful coupling.

    Conclusions:

    • The hybrid dielectric/plasmonic waveguide exhibits strong directionality.
    • This device architecture is effective for achieving efficient coupling between single emitters and optical waveguides.
    • The findings contribute to advancements in integrated photonics for nanoscale applications.