The way by which one can make sure the operating mode of the modulation is\nby observing the Comsol results of the designed model of proposed acousto-\noptic modulator (AOM). These results include the pressure distribution,\nsound pressure distribution, stress distribution at piezoelectric, far-field analysis\nthat describes the diffracted light orders, and electric potential versus light\nfrequency. Throughout the simulating process of modulator operating using\nComsol, it begins when the RF is power by a voltage of 100 V, the light is then\nsplit into first ordered diffraction, which implies that the modulator is in the\noperating mode. The use of semiconductor materials is due to its smaller gap\nthat easily transfers the energy that leads to generating first order diffraction\nwhen they provided a voltage power. It mentioned that zero order diffraction\nindicates the modulator does not run; other orders are appearing with increasing\nthe frequency of light leading to decrease of the efficiency of the\nmodulator performance.
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