REPORT saxena-94/IDIAP Adaptive Multilayer Optical Neural Network Design Saxena, Indu Fiesler, Emile learning liquid crystal light valve optical computing optical multilayer neural network optical neural network spatial light modulator EXTERNAL http://publications.idiap.ch/attachments/reports/1994/94-04.pdf PUBLIC Idiap-RR-04-1994 1994 IDIAP An adaptive multilayer dual-wavelength optical neural network design with all-optical forward propagation, based on a large number of modifiable optical interconnections and a special weight discretization algorithm to compensate for em noise, is described. The presentation of input and interconnection weights is performed by liquid crystal television screens, and optical thresholding at the hidden layer by a liquid crystal light valve.