光弹调制器研究综述及原理验证

光弹调制器是一种基于压电效应和光弹效应的光学调制器件。光弹调制器采用共振工作模式，具有调制频率高,灵敏度高，调制波段宽（紫外~远红外）等特点，可广泛应用于半导体、新材料、生命科学及航天军工等高新技术领域。该文首先阐述了光弹调制器的基本工作原理，包括压电效应、光弹效应等；其次介绍了光弹调制器的结构和重要参数，并分析了不同结构和各参数对器件性能的影响；然后进一步介绍了目前新型光弹调制器的相关研究；最后，针对目前主流的八角形二维结构，该文给出了基于有限元法的数值仿真结果，并对该类型光弹调制器的工作原理和振动特性进行了验证。

Review and Principle Verification of Photoelastic Modulator

The photoelastic modulator is an optical modulation device based on the piezoelectric effect and photoelastic effect. It adopts the resonance working mode, has the characteristics of high modulation frequency, high sensitivity, and wide band modulation (ultraviolet to far infrared), and can be widely used in high tech fields such as semiconductors, new materials, life sciences, and aerospace military industry. Firstly, the basic working principle of photoelastic modulator including piezoelectric and photoelastic effects is described in this paper. Secondly, the structure and important parameters of the photoelastic modulator are introduced, and the influences of different structures and parameters on device performance are analyzed; then, the related research of the new photoelastic modulator is further introduced. Finally, the numerical simulation results based on finite element method are given for the current mainstream octagonal two dimensional structures, and the working principle and vibration characteristics of this type of photoelastic modulator are verified.