We study the modulation instability in a two-dimensional nonlinear single feedback system with a photonic lattice and reveal a sharp transition in the instability regimes as the lattice strength is increased. For a shallow lattice, the instability modes are enhanced parallel to the lattice wave vector, while in stronger lattices, these modes are suppressed.
© 2010 Optical Society of America
Original Manuscript: August 24, 2010
Manuscript Accepted: September 5, 2010
Published: October 21, 2010
Andrey A. Sukhorukov, Nicolas Marsal, Alexander Minovich, Delphine Wolfersberger, Marc Sciamanna, Germano Montemezzani, and Dragomir N. Neshev, "Lattice-controlled modulation instability in photorefractive feedback systems," Opt. Lett. 35, 3568-3570 (2010)