Mc. Eguia et al., LOW-FREQUENCY FLUCTUATIONS IN SEMICONDUCTOR-LASERS WITH OPTICAL FEEDBACK ARE INDUCED WITH NOISE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 58(2), 1998, pp. 2636-2639
Semiconductor lasers with optical feedback present a regime in which i
rregular dropout events are observed (low-frequency fluctuations). Thi
s phenomenon has been interpreted in terms of a purely deterministic m
odel. Recently, it was proposed that these lasers behave as an excitab
le medium and that the low frequency fluctuations are anticipated by n
oise. We study analytically and numerically the statistics of the firi
ng processes predicted by this dynamical scenario and discuss how it c
ompares with the results reported in the literature.