In the former case the stripes generated are parallel to the x-axis, as predicted. During this process stripes get parallel to the x-axis. Note that the dynamical orientation is less marked than in the previous case and defects can be still seen. The average space delay and its variance depends on the noise intensity. We have theoretically predicted the existence of macroscopic, noise- sustained transversal structures in nonlinear optical resonators.
Numerical solutions confirm the qualitative and quantitative predictions.
The growth dynamics of noise-sustained as well as deterministic patterns is presented and helps to distinguish the nature of the structures.