光子自旋霍尔效应是光学中的基本效应之一，类似于电子系统中的自旋霍尔效应，表现为光子自旋态在空间上的分裂现象。光子自旋霍尔效应是一种弱效应，其诱导的光束自旋分裂值一般在亚波长量级。因此，如何有效地增强光自旋霍尔效应并发展相应的操控方法是自旋光子学的一个重要研究方向。本申请从非均匀Pancharatnam-Berry相位的角度出发，力求系统地建立它与光子自旋霍尔效应的内在联系，提出设计不同的横向折射率梯度来操控这一相位，进而调控光子自旋霍尔效应。研究结果不仅将为操控光子自旋提供一个可行的途径，还将为发展以自旋为基础的新型光子器件提供理论依据。

Photonic spin hall effect (PSHE) is a fundamental effect in optics. It is an analogy of its electronic counterpart, which manifests itself as spatial separation of photon spins. The induced spin-dependent splitting by the PSHE is generally very tiny and of the order of a wavelength. Therefore, how to enhance this tiny effect and develop the relevant ways of manipulation are important contents in spinoptics. Based on the consideration of inhomogeneous Pancharatnam-Berry phase, we would like to build the internal connection between the PSHE and the Pancharatnam-Berry phase, and propose that the different refractive index gradient in the transverse can be employed to manipulate this phase and thereby the PSHE. The results of this research will not only provide a possible method for manipulate the spin of photon, but also pave the way for the future spin-based photonic devices.