FIELD: physics.
SUBSTANCE: proposed method comprises application of an integer number of pairs consisting of zero and first tunnel-coupled nonlinear-optical waveguides (TCNOW). Length of every TCNOW includes even or odd number of radiation power pumping at low input intensity when optical nonlinearity influence on power pumping may be neglected. Note here that low and high intensity signals affecting the pumping owing to nonlinearity is fed to zero TCNOW waveguide. Radiation from output of zero or first TCNOW waveguide is fed to zero waveguide of the next TCNOW pair. Parameters of all TCNOW and intensity range of input signal intensity at zero waveguide of every TCNOW are selected so that high intensity signal exits from zero waveguide at odd number of pumping for low input intensities in TCNOW wavelengths, or from first waveguide at even number of pumping for low intensities in wavelengths of these TCNOW.
EFFECT: isolation of signal portion with maximum intensity.
12 cl, 6 dwg
