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Switching of optical vortices in nonlinear annular couplers

TL;DR: In this paper, an annular waveguide coupler was proposed for switching the angular momentum of light in an optical vortex beam launched into one of the ring cores, and demonstrated that the switching takes place well below the collapse threshold.
Abstract: We suggest an annular waveguide coupler for switching the angular momentum of light. We study linear and nonlinear coupling of both power and momentum of an optical vortex beam launched into one of the ring cores, and demonstrate that the switching takes place well below the collapse threshold. The switching is more effective for the inner-ring excitation since it triggers more sharply and for the lower power enough to avoid the beam azimuthal instability.
Citations
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Journal ArticleDOI
TL;DR: A novel type of surface waves that form at the edge of guiding structures consisting of several concentric rings that rotate steadily upon propagation and, in contrast with nonrotating waves, for high rotation frequencies they do not exhibit power thresholds for their existence.
Abstract: We introduce a novel type of surface waves that form at the edge of guiding structures consisting of several concentric rings. Such surface waves rotate steadily upon propagation and, in contrast with nonrotating waves, for high rotation frequencies they do not exhibit power thresholds for their existence. There exists an upper limit for the surface wave rotation frequency, which depends on the radius of the outer guiding ring and on its depth.

15 citations

References
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Book
01 Jan 2003
TL;DR: In this article, the authors introduce spatial and temporal solitons in photonic crystals, and introduce the concept of Incoherent Solitons, which is a subclass of the spatial and temporally soliton.
Abstract: Preface 1. Introduction 2. Spatial Solitons 3. Temporal Solitons 4. Dark Solitons 5. Bragg Solitons 6. Two-Dimensional Solitons 7. Spatiotemporal Solitons 8. Vortex Solitons 9. Vector Solitons 10. Parametric Solitons 11. Discrete Solitons 12. Solitons in Photonic Crystals 13. Incoherent Solitons 14. Related Concepts References Index

2,761 citations