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An electro-optic modulator (EOM) is an optical device in which a signal-controlled element exhibiting an electro-optic effect is used to modulate a beam of light. The modulation may be imposed on the phase , frequency , amplitude , or polarization of the beam.
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 ( optical fibre ). Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators, etc.
Ordinary pentodes are referred to as sharp-cutoff or high-slope pentodes and have uniform aperture size in the control grid. The uniform construction of the control grid results in the amplification factor (mu or μ) and transconductance changing very little with increasingly negative grid voltage, resulting in fairly abrupt cutoff of plate current. [6]
An electro-absorption modulator (EAM) is a semiconductor device which can be used for modulating the intensity of a laser beam via an electric voltage. Its principle of operation is based on the Franz–Keldysh effect, i.e., a change in the absorption spectrum caused by an applied electric field, which changes the bandgap energy (thus the photon energy of an absorption edge) but usually does ...
Phased-array optics is the technology of controlling the phase and amplitude of light waves transmitting, reflecting, or captured (received) by a two-dimensional surface using adjustable surface elements.
The United States on Monday called out Russia and China at the United Nations Security Council for "shamelessly protecting" and emboldening North Korea to further violate U.N. sanctions as ...
Modulator-Demodulator, an interface between a computer system and a telephone network. modulation transformer Part of a radio transmitter used to impress modulation on one amplifying stage. modulation The impression of information on a carrier wave for transmission. monolithic microwave integrated circuit
In Erwin, Tennessee, as families of the dead deal with their loved ones' absences, businesses at a destroyed industrial park still hope to reopen and officials look for ways to pay for costly ...