EXPERIMENTAL STUDY OF THE PROCESS OF DEMULTIPLEXING THE WAVELENGTHS, AFTER PASSING THROUGH A FIBER WITH <i>V
We have shown the possibility of increasing of the number of information channels in the fiber-optic communication line, using vortex beams with topological charges l = ±1, the state of polarization s = ±1 and two wavelengths. Also, using the fine structure of the field of fibers, each of the input beams was identified by polarization state and topological charge after passing through the fiber.