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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 12594–12604

Parallel lensless optical correlator based on two phase-only spatial light modulators

Xu Zeng, Takashi Inoue, Norihiro Fukuchi, and Jian Bai  »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 12594-12604 (2011)

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In this paper, we proposed a parallel phase-only lensless optical correlator based on two pieces of Liquid Crystal on Silicon Spatial Light Modulators. Phase Fresnel Lens Array and specialized grating are implemented to realize multi-channel and multiplexed LOC. Experimental results of Chinese characters’ recognitions are given as demonstration of proposed technique. High uniformity of processing channels has been verified by autocorrelation process of four same Chinese characters. The technique is programmable and adjustment of optical path could be realized without changing of optical setup. The implementations could be performed on the same configuration as single channel optical correlator without mechanical alternation.

© 2011 OSA

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(070.5010) Fourier optics and signal processing : Pattern recognition
(200.4960) Optics in computing : Parallel processing
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: April 20, 2011
Revised Manuscript: May 25, 2011
Manuscript Accepted: June 2, 2011
Published: June 14, 2011

Xu Zeng, Takashi Inoue, Norihiro Fukuchi, and Jian Bai, "Parallel lensless optical correlator based on two phase-only spatial light modulators," Opt. Express 19, 12594-12604 (2011)

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