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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 12 — Jun. 15, 2010
  • pp: 2106–2108

Observation of bandgap guidance of optical vortices in a tunable negative defect

Daohong Song, Xiaosheng Wang, Daniel Shuldman, Jiandong Wang, Liqin Tang, Cibo Lou, Jingjun Xu, Jianke Yang, and Zhigang Chen  »View Author Affiliations


Optics Letters, Vol. 35, Issue 12, pp. 2106-2108 (2010)
http://dx.doi.org/10.1364/OL.35.002106


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Abstract

We experimentally demonstrate linear bandgap guidance of optical vortices as high-gap defect modes (DMs) in two-dimensional induced photonic lattices. We show that donut-shaped vortex beams can be guided in a tunable negative (lower-index) defect, provided that the defect strength is set at an appropriate level. Such vortex DMs have fine features in the “tails” associated with the lattice anisotropy and can be considered as a superposition of dipole DMs. Our numerical results find good agreement with experimental observations.

© 2010 Optical Society of America

OCIS Codes
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(160.5293) Materials : Photonic bandgap materials

ToC Category:
Diffraction and Gratings

History
Original Manuscript: March 12, 2010
Revised Manuscript: May 28, 2010
Manuscript Accepted: June 1, 2010
Published: June 14, 2010

Citation
Daohong Song, Xiaosheng Wang, Daniel Shuldman, Jiandong Wang, Liqin Tang, Cibo Lou, Jingjun Xu, Jianke Yang, and Zhigang Chen, "Observation of bandgap guidance of optical vortices in a tunable negative defect," Opt. Lett. 35, 2106-2108 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-12-2106


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