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Optically addressed variable-efficiency waveguide grating for switching arrays.

E M Strzelecki1, J Chen, F Lin

  • 1Physical Optics Corporation, 20600 Gramercy Place, Torrance, California 90501, USA.

Optics Letters
|September 23, 2009
PubMed
Summary
This summary is machine-generated.

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A novel optically addressed waveguide grating switch was developed. It uses photoinduced birefringence to modulate refractive index and diffraction efficiency for optical switching applications.

Area of Science:

  • Optoelectronics
  • Photonics
  • Materials Science

Background:

  • Waveguide grating devices are crucial for optical signal processing.
  • Controlling diffraction efficiency is key for switch functionality.

Purpose of the Study:

  • To describe and demonstrate an optically addressed waveguide grating switch.
  • To investigate the modulation of refractive index and diffraction efficiency.

Main Methods:

  • Fabrication of a planar slab waveguide with a surface relief grating.
  • Application of an active-material cladding layer.
  • Utilizing a polarized argon laser to induce birefringence.

Main Results:

  • Demonstrated an optically addressed waveguide grating switch.

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  • Achieved modulation of the cladding's refractive index.
  • Successfully modulated the diffraction efficiency of the waveguide grating.

    • Conclusions:

    • The developed device enables optical addressing of waveguide gratings.
    • Photoinduced birefringence offers a viable mechanism for controlling diffraction efficiency.
    • This technology holds promise for advanced optical switching applications.