ON/OFF phase shift keying for chaos-encrypted communication using external-cavity semiconductor lasers
| Autor: | Claudio R. Mirasso, Wolfgang Elsässer, Ingo Fischer, T. Heil, Pere Colet, Michael Peil, Josep Mulet |
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| Rok vydání: | 2002 |
| Předmět: |
Semiconductor laser
Physics business.industry Chaotic Optical communication Phase (waves) Synchronization Condensed Matter Physics Optical chaos Laser Communications Atomic and Molecular Physics and Optics law.invention Semiconductor laser theory Optics law Chaos Optical feedback Electrical and Electronic Engineering business Phase-shift keying |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0018-9197 |
| DOI: | 10.1109/jqe.2002.801950 |
| Popis: | 9 pages, 8 figures, 1 table. Synchronization phenomena of two chaotically emitting semiconductor lasers subject to delayed optical feedback are investigated. The lasers are unidirectionally coupled via their optical fields. Our experimental and numerical studies demonstrate that the relative optical feedback phase is of decisive importance: a characteristic synchronization scenario evolves under variation of the relative optical-feedback phase mediating cyclically between chaos synchronization in conjunction with coherent fields, and uncorrelated states in conjunction with incoherent fields. As a key result, we propose, and numerically demonstrate, a novel ON/OFF phase shift keying method opening up new perspectives for applications in communication systems using chaotic carriers. This work was supported by the European OCCULT project, by the German DAAD, and by the Spanish Acción Integrada HA98-29. |
| Databáze: | OpenAIRE |
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