Sharetop Technology Co., Ltd. passed the product design appraisal smoothly. Experts from Beijing University of Aeronautics and Astronautics, Harbin University of Engineering, Aerospace Science and Engineering, Aerospace Industry, Aerospace Science and Technology, China Shipping Heavy Industry and other well-known units in the industry formed the review panel of the finalization meeting. After listening to the development summary report, reliability report, user report and third-party test report, the relevant process documents were strictly examined, and the production line was inspected on the spot. The Expert Group agreed that as the first innovative thin-diameter polarization-maintaining special optical fiber product in the world, the key performance indexes of XYT PM1310A-60/100 and PM1550B-60/100 polarization-maintaining thin-diameter optical fibers, such as all-temperature crosstalk stability and bending performance, have reached the advanced international level. It is worth mentioning that it has broken the tight lock of key military basic materials in European and American countries, and has broken through the high level of our country. The key technology bottleneck of precision gyroscope is a milestone to promote the performance of high precision inertial navigation system in China.
In the space rocket and missile equipments which require strict directional navigation, the inertial system which controls the attitude and trajectory of the carrier plays an important role. Fiber optic gyroscope (FOG) has many advantages, such as short start-up time, simple structure, light weight, no active components, strong environmental adaptability and so on. It has become the main direction of rapid development in the field of inertial navigation technology. The volume and weight of FOG have a great influence on the overall design of satellite, missile and other equipment. The fiber optic ring wrapped by polarization maintaining fiber is the core sensing unit. The precision of FOG is closely related to the length of the fiber optic ring. Therefore, under the premise of ensuring high precision, high stability and environmental adaptability, polarization maintaining fibers must develop in the direction of fine core diameter and large length.