Latest Progress of Integrated Optical Gyroscopes Sensitive Unit

The photonic integrated circuit (PIC) has led to the development of miniaturized optical devices that can achieve very complex functions on a single chip. Many integrated optical devices, such as beam splitters, resonators, lasers, amplifiers, filters, and modulators, have achieved monolithic integration or hybrid integration. Countries have invested a lot in designing and manufacturing complex PICs research work. The optical gyroscope manufactured by integrated optical technology can effectively reduce the weight and size of the gyroscope, reduce the cost and power consumption, and increase the reliability of the system. The performance index is also gradually improved, and it has good development potential. This article introduces the research status of integrated optical gyroscopes at home and abroad, and briefly analyzes the current research characteristics of improving the performance of integrated optical gyroscopes by using different material platforms and new resonant structure designs.