The valley topological edge states (VTESs) have become a new research hotspot in topological photonics because of its flexibility and diversity. The major challenge for them comes from the dynamical modulation and the weak ability of direction-locked. In this paper, a triangular lattice made of rotatable dielectric rods with three circular holes is designed. Through the rotation of rod, the lifting of the valley points leads to double nontrivial bandgaps and double-band VTESs. The spin-locked excitation of the VTESs, is dependent on whether the nontrivial bandgaps is closed by the VTESs. The reconfigurable VTESs have been achieved with the idea of programmable coding, which provides potential applications in on-chip photon routing.

谷拓扑边缘态（VTESs）因其灵活性和多样性而成为拓扑光子学新的研究热点。他们面临的主要挑战来自动态调制和方向锁定能力较弱。在本文中，设计了一个由三个圆孔的可旋转介电棒组成的三角形格子。通过杆的旋转，谷点的提升导致双非平凡带隙和双频带 VTES。VTES 的自旋锁定激发取决于非平凡带隙是否被 VTES 关闭。可重构的 VTES 是通过可编程编码的思想实现的，这为片上光子路由提供了潜在的应用。