Enhanced chaos synchronization and communication in cascade-coupled semiconductor ring lasers |
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| Institution: | 1. Faculty of Applied Mathematics, AGH University of Science and Technology, Mickiewicz Avenue 30, 30059 Kraków, Poland;2. Mathematical Institute, Silesian University in Opava, Na Rybní?ku 1, 74601 Opava, Czech Republic;3. Subbotin Institute for Geophysics of NAS of Ukraine, Palladin Avenue 32, 03142 Kyiv, Ukraine;1. Mathematics Research Institute, University of Exeter, EX4 4QF, United Kingdom;2. Applied Mathematics Department, University College Cork, Ireland;3. Department of Mathematics, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India |
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| Abstract: | We numerically investigate the properties of chaos synchronization in a master–slave configuration consisting of a master semiconductor ring laser (SRL) with self-feedback or cross-feedback and a solitary SRL (slave). Different coupling schemes related to global injection and mode-selective injection are proposed and explored in our simulations. The numerical results demonstrate that among the studied coupling motifs the synchronization performance between the modes of the two chaotic SRLs is better when global injection scheme is employed. Furthermore, enhanced chaos synchronization and communication in three cascade-coupled SRLs via global injection are reported, where the time delay signature cannot be identified from the outputs of the three SRLs due to the proper selection of cross-feedback parameters of the master SRL. |
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| Keywords: | Semiconductor ring laser Self-feedback Cross-feedback Cascaded synchronization Time delay concealment |
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