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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 10 — May. 12, 2008
  • pp: 7091–7101

Orbital angular momentum (OAM) spectrum correction in free space optical communication

Yi-Dong Liu, Chunqing Gao, Xiaoqing Qi, and Horst Weber  »View Author Affiliations

Optics Express, Vol. 16, Issue 10, pp. 7091-7101 (2008)

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Orbital angular momentum (OAM) of laser beams has potential application in free space optical communication, but it is sensitive against pointing instabilities of the beam, i.e. shift (lateral displacement) and tilt (deflection of the beam). This work proposes a method to correct the distorted OAM spectrum by using the mean square value of the orbital angular momentum as an indicator. Qualitative analysis is given, and the numerical simulation is carried out for demonstration. The results show that the mean square value can be used to determine the beam axis of the superimposed helical beams. The initial OAM spectrum can be recovered.

© 2008 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(350.5030) Other areas of optics : Phase
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 3, 2008
Revised Manuscript: April 17, 2008
Manuscript Accepted: April 17, 2008
Published: May 1, 2008

Yi-Dong Liu, Chunqing Gao, Xiaoqing Qi, and Horst Weber, "Orbital angular momentum (OAM) spectrum correction in free space optical communication," Opt. Express 16, 7091-7101 (2008)

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