Eur. Phys. J. Spec. Top. (2022) 231: 341-350
https://doi.org/10.1140/epjs/s11734-021-00357-w

Regular Article

Numerical study of laser synapse connecting Hindmarsh–Rose neurons

¹ Departamento de Ciencias Exactas y Tecnología, Centro Universitario de los Lagos, Universidad de Guadalajara, Enrique Díaz de León 1144, Colonia Paseos de la Montaña, Lagos de Moreno, Jalisco, Mexico
² Center for Biomedical Technology, Universidad Politécnica de Madrid, Campus Montegancedo, 28223, Pozuelo de Alarcón, Madrid, Spain
³ Innopolis University, Universitetskaya Str. 1, 420500, Innopolis, Russia

^a rider.jaimes@academicos.udg.mx

Received: 19 May 2021
Accepted: 19 November 2021
Published online: 8 January 2022

Abstract

We study numerically the dynamics of a system composed of two artificial neurons connected via an erbium-doped fiber laser. In our system, the laser acts as an optical synapse whose dynamics is controlled with a signal generated by a presynaptic Hindmarsh–Rose neuron, while the laser output drives a postsynaptic Hindmarsh–Rose neuron. Depending on the laser parameter, the postsynaptic neuron can be turned to different dynamical regimes including silence, tonic spikes, bursts with different number of spikes, and chaos.