Optical modulator

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An optical modulator is a device in which a signal-controlled element is used to modulate a beam of light.

See:

• Electro-optic modulator, exploiting the electro-optic effect
• Acousto-optic modulator
• Magneto-optic modulators, using magnetooptic effects such as Faraday and Cotton-Mouton effects, one can modulate the amplitude and frequency of light up to tens of GHz.

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