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