Description: Technical application of the mathematical models of the high-amplitude wave’s instability in antiferromagnetic power filters and in the plasma waveguide is considered. The conditions of the models applicability are shown. The expressions of conversions of dimensionless model parameters to denominate quantity for real technical system are suggested. The characteristic time of modulation instability exciting in plasma waveguide is calculated.
Keywords: nonlinearity, modulation instability, plasma waveguides, antiferromagnetics