info:eu-repo/semantics/article
Multiscale ordinal symbolic analysis of the Lang-Kobayashi model for external-cavity semiconductor lasers: a test of theory
Fecha
2015-08Registro en:
Li, Nianqiang; Zunino, Luciano José; Locquet, Alexandre; Kim, Byungchil; Choi, Daeyoung; et al.; Multiscale ordinal symbolic analysis of the Lang-Kobayashi model for external-cavity semiconductor lasers: a test of theory; Institute of Electrical and Electronics Engineers; IEEE Journal Of Quantum Electronics; 51; 8; 8-2015; 2200206-2200206
0018-9197
1558-1713
CONICET Digital
CONICET
Autor
Li, Nianqiang
Zunino, Luciano José
Locquet, Alexandre
Kim, Byungchil
Choi, Daeyoung
Pan, Wei
Citrin, David
Resumen
We study experimentally and theoretically the permutation entropy (PE) of the optical intensity I(t) of an external-cavity semiconductor distributed feedback laser in the coherence collapse regime. Our PE analysis allows us to uncover the intrinsic dynamical complexity at multiple timescales of the delayed-feedback system, as well as to investigate how the experimental observations can be determined by modeling. An overall good agreement between experiment and theory corroborates the effectiveness of the Lang–Kobayashi model, though the model underestimates the entropy on the timescale of the relaxation oscillations and can lead to a time-delay signature that is less evident than in experiment, indicating a potential vulnerability of chaos encryption. This provides a critical test of the standard theoretical framework in which chaotic externalcavity semiconductor lasers are understood.