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For the polarization switching(PS)and the nonlinear dynamic behaviors(NDBs)of the optically injected laser system composed of master VCSEL and slave one,we put forward a novel manipulation scheme by means of electro-optic(EO)modulation with quasi-phase matched technology in periodically poled LiNbO3.It is found that the PS of the slave VCSEL subject to parallel or orthogonal optical Injection takes on a change of periodic oscillation with the applied transverse electric tie Id.The envelope trajectory of the oscillation peak appears to be a cosine curve.And that of the oscillation wave trough becomes a tine curve.With a certain fixed the bias current of master VCSEL,the optically injected slave VCSEL can emit an arbitrary polarization mode and its NDBs experience different evolutions when the tight from the master laser is modulated by linear EO effect.