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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 25 — Sep. 1, 2012
  • pp: 6125–6129

Generation of optical vortices in spun multihelicoidal optical fibers

Constantine N. Alexeyev  »View Author Affiliations


Applied Optics, Vol. 51, Issue 25, pp. 6125-6129 (2012)
http://dx.doi.org/10.1364/AO.51.006125


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Abstract

We have theoretically studied long-period spun l-helicoidal fibers and their ability to generate singular beams from regular ones. On the basis of perturbation theory in the presence of degeneracy, applied to the scalar waveguide equation, we obtained the structure of coupled modes of such fibers and their spectra. It is shown that the coupled modes consist of the fields, which taken separately bear topological charges that differ by l units. We have numerically studied the process of the passage of a Gaussian beam through such a fiber and demonstrated that long-period l-helicoidal fibers have the ability to change—in a certain wavelength range—the topological charge of the incoming Gaussian beam by l units, generating in this way charge-l optical vortex.

© 2012 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties
(260.6042) Physical optics : Singular optics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 18, 2012
Revised Manuscript: July 27, 2012
Manuscript Accepted: August 2, 2012
Published: August 28, 2012

Citation
Constantine N. Alexeyev, "Generation of optical vortices in spun multihelicoidal optical fibers," Appl. Opt. 51, 6125-6129 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-25-6125

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