In this work, we focus on the polarization state management in optical devices using optical elements based on circular polarization. As an example, we point out the issue in a waveguide display using circular polarization optical elements as input/output couplers, where the polarization state of the light can change as it propagates in the waveguide due to total internal reflection (TIR). This has a negative effect on the waveguide output coupler efficiency, image uniformity, and the polarization multiplexing capability. To address this problem, we discussed two different methods to compensate the polarization state change. With the compensator applied to correct the polarization state change in the waveguide, the optical elements based on circular polarization can be used with their advantages as input/output couplers for waveguide displays.

中文翻译：

---

基于偏振体光栅的波导显示器偏振状态管理补偿器设计

在这项工作中，我们专注于使用基于圆偏振的光学元件的光学设备中的偏振状态管理。例如，我们指出了使用圆偏振光学元件作为输入/输出耦合器的波导显示器中的问题，其中由于全内反射（TIR），光的偏振态会随着在波导中传播而改变。这对波导输出耦合器效率，图像均匀性和偏振复用能力有负面影响。为了解决这个问题，我们讨论了两种不同的方法来补偿偏振态的变化。通过应用补偿器来校正波导中的偏振态变化，可以将基于圆偏振的光学元件以其优点用作波导显示器的输入/输出耦合器。