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Extraction of light from sources located inside waveguide grating structures.

H Rigneault, F Lemarchand, A Sentenac

    Optics Letters
    |December 12, 2007
    PubMed
    Summary
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    This study introduces a crossed waveguide grating capable of extracting total guided-mode power from a point source. Rigorous simulations and graphic analysis reveal the far-field radiation patterns of this luminescent device.

    Area of Science:

    • Photonics and optical engineering
    • Waveguide theory and applications
    • Nanophotonics and metamaterials

    Background:

    • Guided-mode power extraction is crucial for luminescent devices.
    • Waveguide gratings offer a method for controlling light emission.
    • Understanding far-field radiation patterns is essential for device design.

    Purpose of the Study:

    • To present a novel crossed waveguide grating structure.
    • To demonstrate the extraction of total guided-mode power from a point source.
    • To analyze the far-field radiation pattern of the luminescent device.

    Main Methods:

    • Rigorous numerical simulations were employed to model the device.
    • A point source dipole was used to represent the light emitter.

    Related Experiment Videos

  • Graphic analysis was performed to interpret the simulation results.

    • Main Results:

    • The crossed waveguide grating successfully extracts total guided-mode power.
    • Numerical simulations accurately predict the device's performance.
    • Far-field radiation patterns were elucidated through comparative analysis.

    Conclusions:

    • The presented crossed waveguide grating is an effective tool for guided-mode power extraction.
    • The combination of numerical simulation and graphic analysis provides valuable insights into device behavior.
    • This work facilitates the design and optimization of luminescent devices.