Synchronization by injection of common chaotic signal in semiconductor lasers with optical feedback.
We investigate the dynamics of two semiconductor lasers with separate optical feedback when they are driven by a common signal injected from a chaotic laser under the condition of non-identical drive and response. We experimentally and numerically show conditions under which the outputs of the two lasers can be highly correlated with each other even though the correlation with the drive signal is low. In particular, the effects of the phase of the feedback light on the correlation characteristics are described. The maximum correlation between the two response lasers is obtained when the phase of the feedback light is matched between the two response lasers, while the minimum correlation is observed when the difference in the optical phase is pi. On the other hand, the correlation between the drive and response is not sensitive to the phase of the feedback light, unlike the previously studied case of identical drive and response. We numerically examine the difference between the maximum and minimum cross correlations over a wide range of parameters, and show that it is largest when there is a balance between the injection strength and the feedback strength.
Oowada
Isao
I
Department of Electronics and Computer Systems, Takushoku University, Hachioji, Tokyo, Japan.
Ariizumi
Hiroki
H
Li
Mao
M
Yoshimori
Shigeru
S
Uchida
Atsushi
A
Yoshimura
Kazuyuki
K
Davis
Peter
P
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D054023:Lasers, Semiconductor; D008027:Light; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055096:Optical Devices; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013685:Telecommunications / Q000295:instrumentation*