An all-optical neuron with sigmoid activation function

doi:10.1364/OE.27.009620

2019-03-20

169

George Mourgias-Alexandris *

Apostolos Tsakyridis

Nikolaos Passalis

Anastasios Tefas

Konstantinos Vyrsokinos

Nikos Pleros

DOI：10.1364/OE.27.009620

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摘要

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We present an all-optical neuron that utilizes a logistic sigmoid activation function, using a Wavelength-Division Multiplexing (WDM) input & weighting scheme. The activation function is realized by means of a deeply-saturated differentially-biased Semiconductor Optical Amplifier-Mach-Zehnder Interferometer (SOA-MZI) followed by a SOA-Cross-Gain-Modulation (XGM) gate. Its transfer function is both experimentally and theoretically analyzed, showing excellent agreement between theory and experiment and an almost perfect fitting with a logistic sigmoid function. The optical sigmoid transfer function is then exploited in the experimental demonstration of a photonic neuron, demonstrating successful thresholding over a 100psec-long pulse sequence with 4 different weighted-and-summed power levels. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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期刊

Optics Express

IF:

3.3

论文数:

6.1W

被引数:

14.3W

机构

aristotle university of thessaloniki

学者数:

2.6W

论文数: 2.0W

被引数: 19

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