Abstract
Coupled semiconductor lasers that are subject to mutual optical injection have been a topic of research in the last decades, exhibiting diverse complex dynamics in the emitted output [1,2]. Low coupling levels trigger periodic or quasi-periodic dynamics, whereas by strengthening the interaction the complexity of the emitted signals increases. Current implementations of bi-directionally coupled lasers employ only two of them, emitting at the same wavelength, in order to show the interaction among these non-linear devices and map the regimes of the exhibited dynamics [1,2]. Lately, some theoretical works have assumed a large number of lasers that under coupling exhibit a collective behavior in terms of emitted dynamics [3,4]. In the present work, a large-scale network of coupled semiconductor lasers is built experimentally, including 8, 16 and 24 laser devices in a multi-directionally coupled network topology. By adopting a mesh-type topology, a single laser provides injection to all the lasers of the network, while at the same time it receives injection signals from all lasers (including its delayed output, as an optical feedback signal).
© 2015 IEEE
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