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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 8 — Apr. 15, 2008
  • pp: 872–874

Method for acquiring the characteristic parameter of the dual-spiral moiré fringes

Lei Huang and Xianyu Su  »View Author Affiliations

Optics Letters, Vol. 33, Issue 8, pp. 872-874 (2008)

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Based on moiré phenomena and the Talbot self-imaging effect, dual-spiral moiré fringes could be acquired with two spiral gratings. This kind of special moiré fringes could be used to test the collimation of the light beam, which was significant in many correlative applications. The characteristic parameter of the dual-spiral moiré fringes reflected the collimation condition directly. A method with two algorithms, which were respectively based on Fourier transform and the phase-shifting algorithm, was proposed and simulated to extract the characteristic parameter. The influence of the random noise on the extraction was also analyzed and discussed.

© 2008 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(200.3050) Optics in computing : Information processing

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: September 6, 2007
Revised Manuscript: February 28, 2008
Manuscript Accepted: March 8, 2008
Published: April 14, 2008

Lei Huang and Xianyu Su, "Method for acquiring the characteristic parameter of the dual-spiral moiré fringes," Opt. Lett. 33, 872-874 (2008)

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