METHOD FOR MONITORING COMMUNICATION CHANNELS IN FIBER-OPTICAL SYSTEM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC H04B10/00 

FIELD: fiber optic systems.

SUBSTANCE: invention relates to the field of fiber optic systems with wavelength multiplexing of optical channels and can be used in fiber optic systems and communication networks. To achieve the effect, a reflectogram of each optical fiber is formed, the attenuation in each optical fiber is calculated, the value of the power of cumulative interference at the wavelength of the disabled optical emitter λj is measured relative to the wavelengths λ₁, λ₂, ..., λ_k of the emitting optical emitters, the security value is calculated from cumulative interference at the wavelength of the disabled optical emitter.

EFFECT: increasing the accuracy of control and reducing the time to switch to a backup optical fiber with the best parameters from the group of backup optical fibers with a deterioration in the quality of the communication channel along the main optical fiber.

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