Experimental synchrony of semiconductor lasers in coupled networks
| Autor: | Dimitrios Syvridis, Michail Bourmpos, Apostolos Argyris |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Bandwidth (signal processing) Chaotic Laser 01 natural sciences Multiplexing Atomic and Molecular Physics and Optics Synchronization 010305 fluids & plasmas law.invention Semiconductor laser theory Optics law Fiber laser 0103 physical sciences Electronic engineering Spontaneous emission 010306 general physics business |
| Zdroj: | Optics express. 24(5) |
| ISSN: | 1094-4087 |
| Popis: | The emission and synchronization of mutually-coupled semiconductor lasers with short cavities has been already recorded, with transversely unstable solutions existing within the chaotic synchronization manifold. Noise and laser-mismatch induced instabilities cause short de-synchronization events within the overall generalized synchronization, influencing the pragmatism of using these signals in secure data exchange applications. However, such operation can be functional for user authentication and sensing applications by assessing a time-averaged performance of synchrony. Until now, this has not been examined either in large-scale laser network configurations or in large transmission coupling paths, as real network implementations oblige. Here we present the first implementation of a fully-coupled fiber network with up to 16 semiconductor lasers, independently controlled and coupled through long interacting cavities. High level of consistent global or cluster synchrony via chaotic signals is demonstrated among all devices of the same origin and under appropriate operation. Devices that are not identical fail to synchronize at any condition, when coupled to the network. Under multiplexed operation, groups of lasers that emit at spectral distances as low as 50pm are shown to preserve intra-cluster synchronization when transmitted in the same fiber-optic channel, despite their large bandwidth of emitted signals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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