Synchronization properties of bidirectionally coupled semiconductor lasers under asymmetric operating conditions.
We study, both experimentally and numerically, a system of two coupled semiconductor lasers in an asymmetric configuration. A laser subject to optical feedback is bidirectionally coupled to a free running laser. While maintaining the coupling strength, we change the feedback rate and observe a transition from highly correlated low-frequency fluctuations to episodic synchronization between dropouts and jump-ups. Our results resemble those obtained recently in a unidirectionally coupled system [Buldú, Phys. Rev. Lett. 96, 024102 (2006)].
Departamento de Física, Universidade Federal de Pernambuco, 50732-910 Recife PE, Brasil.
Jhon Fredy Martínez
JF
Avila
Raúl
R
Vicente
José R Rios
JR
Leite
Claudio R
CR
Mirasso