The brochure is devoted to phenomenological theory of optically active nonideal one-dimensional multilayer systems. Numerical simulation is carried out for concentration dependence of the specific rotation angle in the specified systems. Gyrotropy features caused by various disordering types are elucidated. Frequency dependence of the specific rotation angle of polarization plane of linearly polarized light is studied for molecular–crystal multilayers whose layers contain point defects. The developed theory creates additional possibilities for modeling and design of optically active multilayer composite materials.