Devices for light control by light based on the surface plasmon resonance effect

Condition of surface plasmon wave excitation depends on dielectric permitivity of a transitive layer bordering on the metal film in which they are excited. Using this property, a family of devices is offered allowing to operate light with the help of light. Namely, it is a modulator of light controlled by light without external electronic devices, a deflector of light controlled by light and a converter of light of one wavelength of radiation to light of another wavelength.