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Proceedings Paper

Towards optoelectronic architectures for integrated neuromorphic computers
Author(s): Romain Martinenghi; Antonio Baylon Fuentes; Maxime Jacquot; Yanne K. Chembo; Laurent Larger
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Paper Abstract

We investigate theoretically and experimentally the computational properties of an optoelectronic neuromorphic processor based on a complex nonlinear dynamics. This neuromorphic approach is based on a new paradigm of or reservoir computing, which is intrinsically different from the concept of Turing machines. It essentially consists in expanding the input information to be processed into a higher dimensional phase space, through the nonlinear transient response of a complex dynamics excited by the input information. The computed output is then extracted via a linear separation of the transient trajectory in the complex phase space, performed through a learning phase consisting of the resolution of a regression problem. We here investigate an architecture for photonic neuromorphic computing via these complex nonlinear dynamical transients. A versatile photonic nonlinear transient computer based on a multiple-delay is reported. Its hybrid analogue and digital architecture allows for an easy reconfiguration, and for direct implementation of in-line processing. Its computational efficiency in parameter space is also analyzed, and the computational performance of this system is successfully evaluated on a standard spoken digit recognition task. We then discuss the pathways that can lead to its effective integration.

Paper Details

Date Published: 8 March 2014
PDF: 7 pages
Proc. SPIE 8989, Smart Photonic and Optoelectronic Integrated Circuits XVI, 89890K (8 March 2014); doi: 10.1117/12.2038347
Show Author Affiliations
Romain Martinenghi, FEMTO-ST Institute, CNRS (France)
Antonio Baylon Fuentes, FEMTO-ST Institute, CNRS (France)
Maxime Jacquot, FEMTO-ST Institute, CNRS (France)
Yanne K. Chembo, FEMTO-ST Institute, CNRS (France)
Laurent Larger, FEMTO-ST Institute, CNRS (France)

Published in SPIE Proceedings Vol. 8989:
Smart Photonic and Optoelectronic Integrated Circuits XVI
Louay A. Eldada; El-Hang Lee; Sailing He, Editor(s)

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