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Optics Letters

Optics Letters


  • Vol. 21, Iss. 3 — Feb. 1, 1996
  • pp: 222–224

Sigmoid neural transfer function realized by percolation

D. Pignon, P. J. M. Parmiter, J. K. Slack, M. A. Hands, T. J. Hall, M. van Daalen, and J. Shawe-Taylor  »View Author Affiliations

Optics Letters, Vol. 21, Issue 3, pp. 222-224 (1996)

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An experiment using the phenomenon of percolation has been conducted to demonstrate the implementation of neural functionality (summing and sigmoid transfer). A simple analog approximation to digital percolation is implemented. The device consists of a piece of amorphous silicon with stochastic bit-stream optical inputs, in which a current percolating from one end to the other defines the neuron output, also in the form of a stochastic bit stream. Preliminary experimental results are presented.

© 1996 Optical Society of America

Original Manuscript: September 12, 1995
Published: February 1, 1996

D. Pignon, M. van Daalen, J. Shawe-Taylor, P. J. M. Parmiter, J. K. Slack, M. A. Hands, and T. J. Hall, "Sigmoid neural transfer function realized by percolation," Opt. Lett. 21, 222-224 (1996)

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  1. J. Shawe-Taylor, P. Jeavons, M. van Daalen, Connect. Sci. 3, 317 (1991). [CrossRef]
  2. T. J. Hall, M. van Daalen, UK patent application9420449.2 (October11, 1994).
  3. D. Pignon, T. J. Hall, “A quantised optical neural network with on-line learning,” submitted toInt. J. Optoelectron.
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  6. T. J. Hall, W. Peiffer, M. Hands, H. Thienpont, W. A. Crossland, J. S. Shawe-Taylor, M. van Daalen, in Optical Computing, Vol. 10 of 1995 OSA Technical Digest Series (Optical Society of America, Washington D.C., 1995), p. 210.
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