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