@Article{Supelec728,
author = {Cristina Masoller and David SUKOW and Athanasios Gavrielides and Marc Sciamanna},
title = {{Bifurcation to square-wave switching in orthogonally delay-coupled semiconductor lasers: Theory and experiment}},
journal = {Physical Review A},
year = {2011},
volume = {84},
number = {2},
pages = {023838-49},
month = {aug},
abstract = {We analyze the dynamics of two semiconductor lasers with
so-called orthogonal time-delayed mutual coupling: the dominant
TE (x) modes of each laser are rotated by 90 degrees (therefore
TM polarization or y) before being coupled to the other laser.
Although this laser system allows for steady state emission in
either one or the two polarization modes, it may also exhibit
stable time-periodic dynamics including square waveforms. A
theoretical mapping of the switching dynamics unveils the region
in parameter space where one expects to observe long-term
time-periodic mode switching. Detailed numerical simulations
illustrate the role played by the coupling strength, the mode
frequency detuning, or the mode gain/loss difference. We
complement our theoretical study with several experiments and
measurements. We present time series and intensity spectra
associated with the characteristics of the square waves and other
waveforms observed as a function of the strength of the delay
coupling. The experimental observations are in very good
agreement with the analysis and the numerical results.}
}