Open AccessSynchronization by injection of common chaotic signal in semiconductor lasers with optical feedback
Author(s) -
Isao Oowada,
Hiroki Ariizumi,
Mao Li,
Shigeru Yoshimori,
Atsushi Uchida,
Kazuyuki Yoshimura,
Peter Davis
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010025
Subject(s) - laser , physics , semiconductor laser theory , optics , signal (programming language) , chaotic , synchronization (alternating current) , phase (matter) , mathematics , computer science , quantum mechanics , topology (electrical circuits) , artificial intelligence , programming language , combinatorics
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.