OPTICAL SWITCHING ELEMENT BASED ON MULTILAYER DIELECTRIC SELECTIVE MIRROR Russian patent published in 2012 - IPC G02F1/00 

FIELD: physics.

SUBSTANCE: layers with large optical thicknesses equal to d_n=x•λ_ref/4 and simultaneously d_n=y•λ_tr/4, where λ_ref is the average wavelength of the reflection band of the optical dielectric mirror, λ_tr is the average wavelength of the transmission band of the optical dielectric mirror, x, y are whole numbers such that x=y±1, are made from ferroelectric material or another optically active material, which provides change in refraction index based on electro-optical, acousto-optical, thermo-optical and mechano-optical effects.

EFFECT: optical switching on at least one output with rate of signal transmission of the nanosecond order, while maintaining accuracy and reliability of the signal.

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