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Optical vortices in antiguides

Journal Article


Abstract


  • We address the question of whether an optical vortex can be trapped in a dielectric structure with a core of a lower refractive index than the cladding-namely an antiguide. Extensive numerical simulations seem to indicate that this inverse trapping of a vortex is not possible, at least in straightforward implementations. Yet, the interaction of a vortex beam with a curved antiguide produces interesting effects, namely a small but finite displacement of the optical energy center-of-mass and the creation of a symmetrical vortex-antivortex pair on the exterior of the antiguide. © 2013 Optical Society of America.

Publication Date


  • 2013

Citation


  • Marrucci, L., Smyth, N. F., & Assanto, G. (2013). Optical vortices in antiguides. Optics Letters, 38(10), 1618-1620. doi:10.1364/OL.38.001618

Scopus Eid


  • 2-s2.0-84878625298

Start Page


  • 1618

End Page


  • 1620

Volume


  • 38

Issue


  • 10

Abstract


  • We address the question of whether an optical vortex can be trapped in a dielectric structure with a core of a lower refractive index than the cladding-namely an antiguide. Extensive numerical simulations seem to indicate that this inverse trapping of a vortex is not possible, at least in straightforward implementations. Yet, the interaction of a vortex beam with a curved antiguide produces interesting effects, namely a small but finite displacement of the optical energy center-of-mass and the creation of a symmetrical vortex-antivortex pair on the exterior of the antiguide. © 2013 Optical Society of America.

Publication Date


  • 2013

Citation


  • Marrucci, L., Smyth, N. F., & Assanto, G. (2013). Optical vortices in antiguides. Optics Letters, 38(10), 1618-1620. doi:10.1364/OL.38.001618

Scopus Eid


  • 2-s2.0-84878625298

Start Page


  • 1618

End Page


  • 1620

Volume


  • 38

Issue


  • 10