Marsal, N.Wolfersberger, D.Sciamanna, M.Montemezzani, G.Neshev, Dragomir2015-12-100018-9197http://hdl.handle.net/1885/55293We present experimental studies on manipulation of modulational instability in a nonlinear dissipative feedback system by a one- and two-dimensional periodic photonic lattice. In particular, we study the control of intrinsic instability modes of a photorefractive single feedback mirror system, by an optically induced lattice with variable parameters. By tuning the lattice strength and periodicity, we can induce patterns of particular geometry, suppress the modulational instability modes, or control the pattern orientation in the transverse plane.Keywords: All-optical; Experimental studies; Feedback mirrors; Feedback systems; Intrinsic instability; Modulational instability; Nonlinear pattern; Optical lattices; Pattern orientation; Photo-refractive; Photonic lattice; Photonic structure; Photorefractive effec Modulational instability; Optical feedback; Optical lattice; Pattern formation; Photorefractive effect200910.1109/JQE.2009.20301482016-02-24