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Optics Letters

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  • Vol. 36, Iss. 8 — Apr. 15, 2011
  • pp: 1383–1385

Compact optical correlator based on one phase-only spatial light modulator

Xu Zeng, Jian Bai, Changlun Hou, and Guoguang Yang  »View Author Affiliations


Optics Letters, Vol. 36, Issue 8, pp. 1383-1385 (2011)
http://dx.doi.org/10.1364/OL.36.001383


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Abstract

An optical correlator that utilizes one phase-only spatial light modulator (SLM) combined with a mirror is proposed and demonstrated. This system is compressed by displaying the input and filter pattern on different parts of the same SLM. The background noise is separated from the correlation signal by superimposing a high-frequency carrier with the filter pattern except in the zero-frequency regions, which will improve the signal-to-noise ratio in pattern recognition. Our architecture is compact and the cost is relatively low by utilizing only one SLM.

© 2011 Optical Society of America

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(070.5010) Fourier optics and signal processing : Pattern recognition
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: February 24, 2011
Revised Manuscript: March 18, 2011
Manuscript Accepted: March 18, 2011
Published: April 11, 2011

Citation
Xu Zeng, Jian Bai, Changlun Hou, and Guoguang Yang, "Compact optical correlator based on one phase-only spatial light modulator," Opt. Lett. 36, 1383-1385 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-8-1383


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