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Optical Modulators for Laser Communication: A Review
Due to broader band width of the visible region of the electromagnetic spectrum there is increasing demand of optical communication. Although the basic components oscillator, receiver and transmitter required for optical communication are easily available, the problem is with optical modulators and de modulators. In this paper a review of basic techniques available for modulation of optical signals has been presented. Emphasis is put on electro optic and magneto optic effects for optical modulation.
Keywords: Optical modulator, Kerr effect, Pockel effect, Faraday rotation