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Applied Optics

Applied Optics


  • Vol. 29, Iss. 20 — Jul. 10, 1990
  • pp: 3019–3025

Optical pattern classifier with Perceptron learning

John H. Hong, Scott Campbell, and Pochi Yeh  »View Author Affiliations

Applied Optics, Vol. 29, Issue 20, pp. 3019-3025 (1990)

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An optical realization of a single layer pattern classifier is described in which Perceptron learning is implemented to train the system weights. Novel use of the Stokes’s principle of reversability for light is made to realize both additive and subtractive weight modifications necessary for true Perceptron learning. This is achieved by using a double Mach-Zehnder interferometer in conjunction with photorefractive hologram recording. Experimental results are given which show the high quality subtractive changes that can be made.

© 1990 Optical Society of America

Original Manuscript: August 25, 1989
Published: July 10, 1990

John H. Hong, Scott Campbell, and Pochi Yeh, "Optical pattern classifier with Perceptron learning," Appl. Opt. 29, 3019-3025 (1990)

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  1. D. Z. Anderson, D. M. Lininger, “Dynamic Optical Interconnects: Volume Holograms as Optical Two-Port Operators,” Appl. Opt. 26, 5031–5038 (1987). [CrossRef] [PubMed]
  2. D. Psaltis, D. Brady, K. Wagner, “Adaptive Optical Networks Using Photorefractive Crystals,” Appl. Opt. 27, 1752–1759 (1988). [CrossRef]
  3. A. Yariv, S. Kwong, “Associative Memories Based on Message-Bearing Optical Modes in Phase Conjugate Resonators,” Opt. Lett. 11, 186–188 (1986). [CrossRef] [PubMed]
  4. R. O. Duda, P. E. Hart, Pattern Classification and Scene Analysis (Wiley, New York1973).
  5. D. Psaltis, C. H. Park, J. Hong, “Higher Order Associative Memories and Their Optical Implementations,” Neural Networks 1, 149–163 (1988). [CrossRef]
  6. H. J. Caulfield, “Parallel N4 Weighted Optical Interconnections,” Appl. Opt. 26, 4039–4040 (1987). [CrossRef] [PubMed]
  7. P. Yeh, T. Y. Chang, P. H. Beckwith, “Real-time optical image subtraction using dynamic holographic interference in photorefractive media,” Opt. Lett. 13, 586–588 (1988). [CrossRef] [PubMed]
  8. J. H. Hong, P. Yeh, S. Campbell, “Trainable Optical Network for Pattern Recognition,” in Technical Digest, Topical Meeting on Optical Computing (Optical Society of America, Washington, DC, 1989), p. 307.
  9. See, for example, P. Yeh, “Two-Wave Mixing in Nonlinear Media,” IEEE J. Quantum Electron. QE-25, 484–519 (1989). [CrossRef]

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