All-optical implementation of a self-organizing map: a preliminary approach

J Duvillier, M Killinger, K Heggarty, K Yao - Applied optics, 1994 - opg.optica.org
J Duvillier, M Killinger, K Heggarty, K Yao
Applied optics, 1994opg.optica.org
Optically addressed ferroelectric liquid-crystal devices present certain characteristics that
make them attractive for all-optical implementations of neural architectures. This is
particularly true for the implementation of analog self-organizing systems such as Kohonen's
self-organizing map. The optical architecture proposed here is based on the principle of a
resonator memory. The main novelty lies in the two-dimensional, continuous, binary
information encoding and organization. Basic operations such as neural decision, weight …
Optically addressed ferroelectric liquid-crystal devices present certain characteristics that make them attractive for all-optical implementations of neural architectures. This is particularly true for the implementation of analog self-organizing systems such as Kohonen's self-organizing map. The optical architecture proposed here is based on the principle of a resonator memory. The main novelty lies in the two-dimensional, continuous, binary information encoding and organization. Basic operations such as neural decision, weight updating, and information spatial ordering are investigated. The principle of a learning procedure close to the Hebbian rule is discussed.
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