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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 15 — Aug. 1, 2000
  • pp: 1077–1079

Optical computing by a vector holographic memory system

Katsunori Kawano, Jiro Minabe, Takehiro Niitsu, Tsutomu Ishii, Yasunari Nishikata, and Kazuo Baba  »View Author Affiliations


Optics Letters, Vol. 25, Issue 15, pp. 1077-1079 (2000)
http://dx.doi.org/10.1364/OL.25.001077


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Abstract

We propose what is to our knowledge a novel holographic memory system that is simultaneously applicable to data storage and optical computing. We introduce a polarization-modulated reference beam into holographic recording. A desired spatial-frequency component of an object beam is recorded as a polarization-modulated grating, and the other component is recorded as an intensity-modulated grating. Since the polarization-modulated grating rotates the polarization axis of the incident light by 90°, it is possible to distinguish the desired spatial-frequency component of the retrieved image. Utilizing this property, we have successfully performed spatial-frequency filtering and frequency-selective matched filtering. The system is capable of a variety of optical computations, depending on the design of the polarization modulation.

© 2000 Optical Society of America

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(210.2860) Optical data storage : Holographic and volume memories

Citation
Katsunori Kawano, Jiro Minabe, Takehiro Niitsu, Tsutomu Ishii, Yasunari Nishikata, and Kazuo Baba, "Optical computing by a vector holographic memory system," Opt. Lett. 25, 1077-1079 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-15-1077


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