Multi-state optical flip-flop memory based on ring lasers coupled through the same gain medium
| Autor: | Daan Lenstra, S Shaoxian Zhang, Heongkyu Ju, Y Yong Liu, Hjs Harm Dorren, GD Giok-Djan Khoe, Z Zhonggui Li |
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| Přispěvatelé: | Electro-Optical Communication |
| Rok vydání: | 2007 |
| Předmět: |
Physics
Active laser medium business.industry Physics::Optics Nonlinear optics Ring laser Ring (chemistry) Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optical bistability Optics law Oscillation (cell signaling) Electrical and Electronic Engineering Physical and Theoretical Chemistry business Flip-flop |
| Zdroj: | Optics Communications, 270(1), 85-95. Elsevier |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2006.08.031 |
| Popis: | We investigate a system consisting of multiple ring lasers coupled by a single gain medium. All the ring lasers share a common feedback arm. The output power of an individual laser shows periodic oscillations as a function of time. The periodicity of the oscillation is determined by the ratio of the roundtrip times of the feedback arm and the ring cavity. In the case that two of such ring lasers are coupled, either their oscillation periodicities are synchronized, or the system is bi-stable. In the latter operation regime, the system can act as an optical flip-flop memory whose state be switched by injection of external light. The concept can be extended to multi-state operations; an eight-state optical flip-flop memory is experimentally demonstrated. ?? 2006 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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