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Updated: May 13, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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Efficient mode converter design using asymmetric graded index photonic structures.

B B Oner1, M Turduev, I H Giden

  • 1Department of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara, Turkey. bilgehan.oner@gmail.com

Optics Letters
|March 5, 2013
PubMed
Summary

This study introduces an asymmetric graded-index (GRIN) medium for efficient even-to-odd mode conversion. The compact photonic crystal structure enables novel light manipulation for higher-order modes.

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Area of Science:

  • Photonics
  • Optics
  • Materials Science

Background:

  • Mode conversion is crucial for optical signal processing.
  • Asymmetric structures offer unique light manipulation capabilities.
  • Graded-index (GRIN) media provide tailored refractive index profiles.

Purpose of the Study:

  • To propose and demonstrate an asymmetric graded-index (GRIN) inhomogeneous medium.
  • To achieve efficient even-to-odd mode conversion.
  • To explore the creation of higher-order optical modes.

Main Methods:

  • Implementation of an exponential refractive index profile for asymmetry.
  • Design of a two-dimensional photonic crystal with rectangular unit cells.
  • Utilizing constant dielectric radii within the photonic crystal structure.

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Last Updated: May 13, 2026

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Published on: August 12, 2013

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Main Results:

  • Successful demonstration of even-to-odd mode conversion.
  • Achieved efficient mode transformation within a compact structure.
  • Indicated potential for generating various higher-order modes.

Conclusions:

  • Asymmetric GRIN media are effective for mode conversion.
  • Photonic crystal structures can facilitate compact optical devices.
  • This approach advances light manipulation for advanced optical applications.