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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

Optical vortices in antiguides.

Lorenzo Marrucci1, Noel F Smyth, Gaetano Assanto

  • 1Dipartimento di Fisica, Università di Napoli Federico II, Napoli, Italy. marrucci@na.infn.it

Optics Letters
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

Trapping optical vortices in antiguides is generally not possible. However, curved antiguides can displace optical energy and create vortex-antivortex pairs outside the structure.

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Area of Science:

  • Optics
  • Photonics
  • Dielectric structures

Background:

  • Optical vortices are beams of light with a helical phase front.
  • Antiguides are dielectric structures with a lower refractive index core than the cladding.
  • Investigating light propagation in such structures is crucial for optical device development.

Purpose of the Study:

  • To determine if optical vortices can be trapped within an antiguide structure.
  • To explore the interaction dynamics between optical vortices and curved antiguides.

Main Methods:

  • Extensive numerical simulations were performed.
  • The behavior of optical vortices in dielectric antiguides was modeled.

Main Results:

  • Direct inverse trapping of an optical vortex in a standard antiguide was found to be not possible.
  • Interaction with a curved antiguide resulted in a measurable displacement of the optical energy center-of-mass.
  • A symmetrical vortex-antivortex pair was generated on the exterior of the curved antiguide.

Conclusions:

  • Standard antiguides do not support the trapping of optical vortices.
  • Curved antiguides exhibit unique light manipulation properties, including energy displacement and vortex-antivortex pair generation.
  • These findings have implications for designing novel photonic devices and understanding light-matter interactions.