Inherent noise in ultra-wideband heterogeneous telecommunication channels

The value of the S/N in different parts of a heterogeneous network of fiber optic links with two laser beams, a photodetector, in the millimeter wavelength radio channel to a demodulator in a decoder-detector at the entrance of which S/N ratio of 16.8 dB can be provided, is analyzed. It provides high quality of reception of signals at the respective modulation.