Journal ArticleDOI
Consistency and complexity in coupled semiconductor lasers with time-delayed optical feedback.
Kazutaka Kanno,Atsushi Uchida +1 more
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TLDR
This work investigates the consistency of unidirectionally coupled semiconductor lasers with optical feedback and measures the complexity of the entire laser system by using the Lyapunov spectrum, finding that it can be classified into three regions.Abstract:
Consistency of response in a system driven repeatedly by a complex signal has been observed in many nonlinear dynamical systems. We investigate the consistency of unidirectionally coupled semiconductor lasers with optical feedback and measure the complexity of the entire laser system by using the Lyapunov spectrum. The complexity strongly depends on the degree of consistency. It is found that the complexity of the coupled laser system can be classified into three regions. When the system shows consistency, the complexity of the entire laser system corresponds to that of the solitary drive laser. In the inconsistency region, the complexity of the entire laser system corresponds to the sum of the complexity of the uncoupled drive and response lasers. The complexity increases more than the sum of the two solitary lasers near the boundary of the consistency region, where new dynamical fluctuations appear due to the optical carrier interaction between the two lasers.read more
Citations
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Journal ArticleDOI
Laser dynamical reservoir computing with consistency: an approach of a chaos mask signal.
TL;DR: A chaos mask signal is introduced as an input temporal mask for reservoir computing and a time-series prediction task is performed to compare the errors of the task obtained from the chaosMask signal with those obtained from other digital and analog masks.
Journal ArticleDOI
Conditions for reservoir computing performance using semiconductor lasers with delayed optical feedback.
TL;DR: A particularly attractive all-optical system using optical information injection into a semiconductor laser with delayed feedback is studied, and it is found that for partial injection locking the authors achieve a good combination of consistency and memory.
Journal ArticleDOI
Consistency in echo-state networks.
Thomas Lymburn,Alexander Khor,Thomas Stemler,Débora C. Corrêa,Michael Small,Michael Small,Thomas Jüngling +6 more
TL;DR: In this paper, the authors apply the concept of consistency to echo-state networks, which are an artificial-neural network version of reservoir computing, and measure the consistency levels of the high-dimensional response, yielding a comprehensive portrait of the echo state property.
Journal ArticleDOI
Consistency properties of a chaotic semiconductor laser driven by optical feedback.
TL;DR: The consistency properties of a semiconductor laser are studied in response to a coherent optical drive originating from delayed feedback and the sub-Lyapunov exponent is experimentally determined, underlying the consistency properties.
Journal ArticleDOI
Entropy rate of chaos in an optically injected semiconductor laser for physical random number generation
TL;DR: In this paper, the entropy of chaotic laser outputs generated by an optically injected semiconductor laser for physical random number generation was evaluated and the vertical resolution and sampling time τ were numerically optimized by comparing the entropy with the Kolmogorov-Sinai entropy.