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Related Experiment Videos

Multiline two-dimensional guided-mode resonant filters.

Sakoolkan Boonruang1, Andrew Greenwell, M G Moharam

  • 1College of Optics and Photonics/CREOL, University of Central Florida, Orlando, FL 32816, USA. sakoolka@creol.ucf.edu

Applied Optics
|July 21, 2006
PubMed
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A new two-dimensional guided-mode resonant (GMR) filter offers tunable multi-line spectral filtering. This advanced GMR filter design allows precise control over resonance locations and separations, unlike previous 1D GMR filters.

Area of Science:

  • Photonics
  • Nanophotonics
  • Optical Filters

Background:

  • Guided-mode resonant (GMR) filters are crucial optical components.
  • Traditional 1D GMR filters have limitations in controlling resonance characteristics.
  • A need exists for advanced GMR filters with tunable multi-line spectral properties.

Purpose of the Study:

  • To propose and demonstrate a novel two-dimensional (2D) GMR filter.
  • To explore the control over spectral line position and separation in 2D GMR filters.
  • To present designs for multi-line reflection filters using 2D GMR structures.

Main Methods:

  • Utilized a two-dimensional grating structure to produce multiple planes of diffraction.
  • Matched guided modes in different diffraction planes to achieve multiple resonances at different wavelengths.

Related Experiment Videos

  • Modified grating periodicity and physical dimensions to control resonance location and separation.
  • Designed filters using rectangular-grid and hexagonal-grid grating structures.

    • Main Results:

    • Demonstrated a novel 2D GMR filter concept for multi-line spectral filtering.
    • Achieved controllable spectral separation of up to 23% for two-line filters.
    • Designed two-line reflection filters with spectral linewidths less than 1 nm.
    • Developed three-line filters with two independently controllable resonance locations using hexagonal-grid gratings.

    Conclusions:

    • The proposed 2D GMR filter offers superior control over spectral characteristics compared to 1D GMR filters.
    • This technology enables the design of sophisticated multi-line optical filters with tunable properties.
    • The 2D GMR approach opens new possibilities for spectral shaping in photonic devices.