22 December 1989 Simultaneous Binarisation And Amplification Of Optical Signals Through The Photorefractive Effect
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Proceedings Volume 1127, Nonlinear Optical Materials II; (1989); doi: 10.1117/12.961428
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France
Abstract
We show how photorefractive two wave mixing allows a nonlinear input-output response providing compational abilities of decision. Particularly, we investigate the realization of a photo-refractive "optical neuron". Signal amplification with saturation is obtained and could compensate for losses due to holograhic connections. Moreover, the treatment of bipolar signals is allowed by preserving the phase of the wave in a coherent situation. Experimental evidence, using a crystal of BaTiO3 is presented.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. Hornung-Lequeux, P. Lalanne, P. Chavel, G. Roosen, "Simultaneous Binarisation And Amplification Of Optical Signals Through The Photorefractive Effect", Proc. SPIE 1127, Nonlinear Optical Materials II, (22 December 1989); doi: 10.1117/12.961428; https://doi.org/10.1117/12.961428
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KEYWORDS
Crystals

Neurons

Neural networks

Holography

Nonlinear optical materials

Content addressable memory

Laser crystals

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