electro-optical light modulator

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• Electro-optic modulator — (EOM) is an optical device in which a signal controlled element displaying electro optic effect is used to modulate a beam of light. The modulation may be imposed on the phase, frequency, amplitude, or direction of the modulated beam. Modulation… …   Wikipedia

• Optical modulators using semiconductor nano-structures — Contents 1 Optical modulators using semiconductor nano structures 1.1 Electro optic modulator of nano structures 1.2 Acousto optic modulator of nano structures …   Wikipedia

• Optical modulator — An optical modulator is a device which is used to modulate a beam of light. The beam may be carried over free space, or propagated through an optical waveguide. Depending on the parameter of a light beam which is manipulated, modulators may be… …   Wikipedia

• Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… …   Wikipedia

• Electro-optic effect — An electro optic effect is a change in the optical properties of a material in response to an electric field that varies slowly compared with the frequency of light. The term encompasses a number of distinct phenomena, which can be subdivided… …   Wikipedia

• Twisted nematic field effect — The twisted nematic effect ( TN effect ) in liquid crystals is claimed to be first discovered by James Fergason in 1970 at the International Liquid Xtal Company in Kent Ohio. Fergason patented his work at about the same time that the Central… …   Wikipedia

• Modulating retro-reflector — A modulating retro reflector (MRR) system combines an optical retro reflector and an optical modulator to allow optical communications[1] and sometimes other functions such as programmable signage.[2] Free space optical communication technology… …   Wikipedia

• materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …   Universalium

• Holographic data storage — is a potential replacement technology in the area of high capacity data storage currently dominated by magnetic and conventional optical data storage. Magnetic and optical data storage devices rely on individual bits being stored as distinct… …   Wikipedia

• Opto-electronic oscillator — An opto electronic oscillator (OEO) is an optoelectronic circuit that produces repetitive electronic sine wave and/or modulated optical continuous wave signals. An opto electronic oscillator is based on converting the continuous light energy from …   Wikipedia

• motion-picture technology — Introduction       the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …   Universalium