Abstract A new multiplexed system based on double imaging Mach–Zehnder interferometry is proposed in this study for the simultaneous measurement of out-of-plane deformation and its first derivative. A modified Mach–Zehnder interferometer is used in the proposed system as shearing device, which has two pairs of imaging lenses and apertures placed on its arms. Therefore, carrier frequency and shearing amount can be independently adjusted using different components. An optical fiber is used to introduce reference beam, which has orthogonal states of polarization with one of the object beams. Shearogram and hologram without cross interference can be obtained by interference with the unpolarized object beam. Experimental results are presented for two pressure-loaded circular plates.

中文翻译：

---

一种用于同时测量平面外变形及其一阶导数的新型多路复用系统

摘要 本研究提出了一种基于双成像马赫-曾德干涉测量的新型多路复用系统，用于同时测量面外变形及其一阶导数。改进的 Mach-Zehnder 干涉仪在所提议的系统中用作剪切装置，它有两对成像透镜和放置在其臂上的孔径。因此，可以使用不同的组件独立调整载波频率和剪切量。光纤用于引入参考光束，该参考光束与目标光束之一具有正交偏振状态。通过与非偏振物光束干涉，可以获得无交叉干涉的剪切图和全息图。给出了两个受压圆板的实验结果。