NEURAL OPERATION USING STIMULATED BRILLOUIN-SCATTERING IN OPTICAL-FIBER

We investigate an optoelectronic system that can perform weighting and threshold operations similarly to a neuron. The weighted summation is carried out optically in an optical fiber by using stimulated Brillou in scattering. It is shown that magnitude and sign of a weight associa ted with an input can be set by changing the signal intensity and wave length, respectively. A signal traveling in the backward direction is required to sense additions and subtractions. Due to inherent parallel nature of optical processing, this system can outperform a digital sy stem for large numbers of inputs. (C) 1998 Society of Photo-Optical In strumentation Engineers. [S0091-3286(98)02906-7].