Excitable response of a noisy adaptive network of spiking lasers.

IF 2.7 2区 数学 Q1 MATHEMATICS, APPLIED
Chaos Pub Date : 2025-05-01 DOI:10.1063/5.0252964
S Barland, O D'Huys, R Veltz
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引用次数: 0

Abstract

We analyze experimentally and theoretically the response of a network of spiking nodes to external perturbations. The experimental system consists of an array of semiconductor lasers that are adaptively coupled through an optoelectronic feedback signal. This coupling signal can be tuned from one to all to globally coupled and makes the network collectively excitable. We relate the excitable response of the network to the existence of a separatrix in phase space and analyze the effect of noise close to this separatrix. We find numerically that larger networks are more robust to uncorrelated noise sources in the nodes than small networks, in contrast to the experimental observations. We remove this discrepancy considering the impact of a global noise term in the adaptive coupling signal and discuss our observations in relation to the network structure.

尖峰激光噪声自适应网络的可激响应。
我们从实验和理论上分析了尖峰节点网络对外部扰动的响应。实验系统由一组通过光电反馈信号自适应耦合的半导体激光器组成。这种耦合信号可以从一个到所有调谐到全局耦合,并使网络具有集体可兴奋性。我们将网络的可激响应与相空间中分离矩阵的存在联系起来,并分析了该分离矩阵附近噪声的影响。我们在数值上发现,与实验观察结果相反,大型网络对节点中不相关噪声源的鲁棒性比小型网络更强。考虑到自适应耦合信号中全局噪声项的影响,我们消除了这种差异,并讨论了我们的观察结果与网络结构的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chaos
Chaos 物理-物理:数学物理
CiteScore
5.20
自引率
13.80%
发文量
448
审稿时长
2.3 months
期刊介绍: Chaos: An Interdisciplinary Journal of Nonlinear Science is a peer-reviewed journal devoted to increasing the understanding of nonlinear phenomena and describing the manifestations in a manner comprehensible to researchers from a broad spectrum of disciplines.
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