Central South University of Forestry and Technology (2021YJ0056); National Natural Science Foundation of China (11404410); Natural Science Foundation of Hunan Province (2020JJ4935); Scientific Research Foundation of Hunan Provincial Education Department (20B602, 21B0253).
机构署名：
本校为第一且通讯机构
院系归属：
理学院
摘要：
We present a flexible scheme enabling reversible switching of topological states and dynamic modulation of optical bistability in a fixed micro-nano nonlinear optical system. The system realizes the optical modulation of reconfigurable topological edge states through phase transition-induced optical property changes in Ge2Sb2Te5. The third-order nonlinear optical effects of the system are effectively enhanced by local field enhancement in the dual-band via reconfigurable topological edge states, which have a positive impact on the realization of dual-channel modulated optical bistability. In p...
