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  2. Electro-optic modulator - Wikipedia

    en.wikipedia.org/wiki/Electro-optic_modulator

    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.

  3. Electro–optic effect - Wikipedia

    en.wikipedia.org/wiki/Electrooptic_effect

    Electro-optic modulators are usually built with electro-optic crystals exhibiting the Pockels effect. The transmitted beam is phase modulated with the electric signal applied to the crystal. Amplitude modulators can be built by putting the electro-optic crystal between two linear polarizers or in one path of a Mach–Zehnder interferometer.

  4. Optical modulator - Wikipedia

    en.wikipedia.org/wiki/Optical_modulator

    Usually, if several such effects appear together, the modulator is called an electro-absorptive modulator. Refractive modulators most often make use of an electro-optic effect. Some modulators utilize an acousto-optic effect or magneto-optic effect or take advantage of polarization changes in liquid crystals. The refractive modulators are named ...

  5. Optical modulators using semiconductor nano-structures

    en.wikipedia.org/wiki/Optical_modulators_using...

    An electro-optic modulator is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. It typically contains one or two Pockels cells , and possibly additional optical elements such as polarizers.

  6. Electro-absorption modulator - Wikipedia

    en.wikipedia.org/wiki/Electro-absorption_modulator

    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 ...

  7. Pockels effect - Wikipedia

    en.wikipedia.org/wiki/Pockels_effect

    A pulse picker is typically composed of an oscillator, electro-optic modulator, amplifiers, high voltage driver, and a frequency doubling modulator along with a Pockels cell. [9] The Pockels cell can pick up a pulse from a laser induced bunch while blocking the rest by synchronized electro-optic switching.

  8. Silicon photonics - Wikipedia

    en.wikipedia.org/wiki/Silicon_photonics

    In a typical optical link, data is first transferred from the electrical to the optical domain using an electro-optic modulator or a directly modulated laser. An electro-optic modulator can vary the intensity and/or the phase of the optical carrier.

  9. Opto-electronic oscillator - Wikipedia

    en.wikipedia.org/wiki/Opto-electronic_oscillator

    Most OEOs utilize the transmission characteristics of an optical modulator together with a fiber-optic delay line to convert light energy into stable, spectrally pure RF/microwave reference signals. Light from a laser is introduced into an electro-optic (E/O) modulator, the output of which is passed through a long optical fiber and detected ...

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