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Related Experiment Videos

Dynamic guided-mode resonant grating filter with quadratic electro-optic effect.

Hiroyuki Ichikawa1, Hisao Kikuta

  • 1Faculty of Engineering, Ehime University, Matsuyama 790-8577. hichikaw@dpc.ehime-u.ac.jp

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|August 2, 2005
PubMed
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We present a new method for dynamic switching of guided-mode resonant grating filters using the quadratic electro-optic effect. This approach enables tunable optical filtering in waveguide devices with subwavelength structures.

Area of Science:

  • Photonics
  • Materials Science
  • Optical Engineering

Background:

  • Guided-mode resonant grating filters offer tunable optical properties.
  • Electro-optic materials allow for external control of optical responses.
  • Subwavelength structures are crucial for advanced photonic devices.

Purpose of the Study:

  • To propose a novel concept for dynamic switching of guided-mode resonant grating filters.
  • To investigate the use of the quadratic electro-optic effect for filter modulation.
  • To enable tunable optical filtering in waveguide devices.

Main Methods:

  • Electromagnetic analysis of subwavelength structures.
  • Numerical simulation using a modified finite-difference time-domain (FDTD) method.

Related Experiment Videos

  • Modeling of inhomogeneous anisotropic media, specifically lead lanthanum zirconate titanate (PLZT).

    • Main Results:

    • Demonstration of dynamic switching capability in the proposed filter design.
    • Validation of the modified FDTD method for simulating complex optical media.
    • Analysis of filter performance influenced by external electric fields and grating properties.

    Conclusions:

    • The proposed concept provides a simple and effective method for dynamic filter switching.
    • The quadratic electro-optic effect is suitable for modulating guided-mode resonant grating filters.
    • The developed numerical method accurately simulates devices with inhomogeneous anisotropic materials.