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Applied Optics

Applied Optics


  • Vol. 37, Iss. 3 — Jan. 20, 1998
  • pp: 469–472

Transfer of orbital angular momentum from a stressed fiber-optic waveguide to a light beam

David McGloin, Neil B. Simpson, and Miles J. Padgett  »View Author Affiliations

Applied Optics, Vol. 37, Issue 3, pp. 469-472 (1998)

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A stressed fiber-optic waveguide is used to impart orbital angular momentum to a Hermite–Gaussian (HG10) laser mode. The transmitted beam has an annular intensity profile and a well-defined azimuthal phase dependence. We confirm the phase structure of the beam by observing the interference pattern produced between it and a plane wave. The transfer of the angular momentum to the light occurs because of a difference in phase velocity within the fiber for two orthogonal modes that comprise the input beam. This represents a mechanism for the transfer of orbital angular momentum to a light beam that has not hitherto been identified.

© 1998 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(260.0260) Physical optics : Physical optics

Original Manuscript: July 10, 1997
Revised Manuscript: August 26, 1997
Published: January 20, 1998

David McGloin, Neil B. Simpson, and Miles J. Padgett, "Transfer of orbital angular momentum from a stressed fiber-optic waveguide to a light beam," Appl. Opt. 37, 469-472 (1998)

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