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Related Experiment Video

Updated: Jul 6, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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Interdigitated electrode-induced phase grating with an electrically switchable and tunable period.

M Kulishov1

  • 1Adtek Photomask, Incorporated, 4950 Fisher Street, Montreal, Quebec H4T 1J6, Canada. info@adtekphotomask.com

Applied Optics
|March 8, 2008
PubMed
Summary
This summary is machine-generated.

A novel adjustable electro-optic phase grating design for waveguides is presented. This design allows for tunable grating periodicity and reflectivity, enabling advanced optical communication applications.

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Area of Science:

  • Photonics and Waveguide Technology
  • Electro-optic Devices
  • Optical Communications

Background:

  • Waveguide-based optical devices are crucial for modern optical communication systems.
  • Controlling light propagation within waveguides requires precise manipulation of refractive index.
  • Existing electro-optic phase gratings have limitations in tunability and application scope.

Purpose of the Study:

  • To propose a new design for an adjustable electro-optic phase grating within a waveguide.
  • To rigorously calculate the induced electric field and refractive index distribution.
  • To demonstrate the tunability of grating periodicity and reflectivity.

Main Methods:

  • Development of an original analytical technique for rigorous calculation.
  • Modeling of electric field and refractive index distribution using Mathcad software.
  • Application of voltage to double-sided periodic interdigitated electrode arrays.

Main Results:

  • The fundamental periodicity of the induced grating can be switched between 'l' and '2l' by adjusting applied voltage, where 'l' is electrode spatial periodicity.
  • Peak grating reflectivity can be fine-tuned by modifying the constant component of the induced refractive index.
  • The design demonstrates precise control over grating properties.

Conclusions:

  • The proposed electro-optic phase grating design offers adjustable and tunable characteristics.
  • This design provides a foundational concept for various optical networking applications.
  • Potential applications include optical switching, modulation, deflection, and data processing.