Guangtongxin yanjiu (Jun 2024)
Research Progress of Whispering Gallery Mode Optical Microcavity and Its Application
Abstract
In recent years, high quality factor echo wall mode optical microcavities have developed rapidly and become a hot research topic in the fields of optics and physics. Optical microcavity is a kind of micro optical element. Due to its small size and high-quality factor, it can enhance the interaction between light and matter, enabling long-time light stays. Echo wall mode resonators are one of the typical representatives of optical microcavities, with advantages of small size, high sensitivity, and long life. Currently, applications based on echo wall mode resonators are mainly concentrated in various fields such as sensors, lasers, filters, and so on. However, current research on echo wall mode resonators has not yet achieved large-scale production, and is only in the laboratory research stage. Industrial production still has shortcomings such as high cost and manufacturing process difficulties. This article focuses on the research progress of echo wall mode resonators, expounds the impact of echo wall materials on Q values, and discusses the applications of echo wall mode resonators in the fields of sensors, lasers, and filters in recent years. It also proposes the challenges and further research directions of echo wall mode resonators in the future, which may realize all-optical networks. For further research directions, we believe that it is necessary to reduce costs, shorten time, and improve the accuracy and efficiency of the preparation process. It is also necessary to solve the coupling problem between the microcavity and the optical device, improving the coupling efficiency and the anti-interference ability. It should also address the sensitivity of the cavity to the environment to ensure that the microcavity has good stability when preparing devices such as filters.
