Significance In the 20th century, the research of the Fabry -Pérot (F -P) cavity mainly focused on basic optical properties and light source stabilization technology. However, with the development of quantum optics and nanotechnology, the research field of F -P microcavity has expanded rapidly in the 21st century. Nowadays, F -P microcavity is not only employed as an optical measurement tool, but also an important platform for studying the lightmatter interactions to