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本工作建立了用压电导体的柱波光弹性调制器理论,该理论可以估算调制器的振幅—频率和能量特性,以及施加到调制器的压电导体的阻抗。对调制器产生的双折射的偏转角和调制器的振荡相位以及压电导体的阻抗与振荡频率的关系进行了实验研究。在共振频率实际上同调制器的振荡频率重合,其振幅最大,而压电导体的阻抗电抗分量也等于零。实验曲线和以所建立的理论为基础计算的曲线相对偏差不超过30％,本工作是在俄罗斯基础研究基金的财政支持下实施的。
In this work, a piezoelectric waveguide-based photoelastic modulator theory was developed that estimates the amplitude-frequency and energy characteristics of the modulator and the impedance of the piezoelectric conductor applied to the modulator. The birefringence deflection angle of the modulator, the phase of the modulator and the relationship between the impedance of the piezoelectric conductor and the oscillation frequency were investigated experimentally. When the resonance frequency actually coincides with the oscillation frequency of the modulator, its amplitude is maximized, and the impedance reactance component of the piezoelectric conductor is also equal to zero. The relative deviation between the experimental curve and the curve calculated based on the established theory does not exceed 30%. This work was carried out with the financial support of the Russian Foundation for Basic Research.