Optical switch have a wide range of applications in fiber communication systems, and their implementation technologies are diverse, including: mechanical optical switch, thermo-optic switch, acousto-optic switch, electro-optic switch, magneto-optical switch, and MEMS optical switch, etc. The MEMS optical switch is a high-tech product based on MEMS(Micro-Electro-Mechanical System) technology. It has the characteristics of small size, low power consumption, and good expandability. It is widely used in optical network scenarios such as ROADM, iODF and fiber sensing etc.