Compared with traditional panda fiber, photonic crystal fiber has stronger bending resistance and better temperature stability, and the impact of low-temperature stress and geomagnetic stress is significantly reduced.
Xinhua Finance and Economics, Beijing, September 27th (Chen Ran) - Guided by the "Science and Technology Innovation China" platform of the China Association for Science and Technology, and organized by the Innovation Service Center of the Beijing Association for Science and Technology and the "Science and Technology Innovation China" investment consortium, the "Light Leading Intelligent Core Manufacturing to Lead the Future" - "Breakthroughs and Challenges of China's Intelligent Manufacturing in the Fiber Optic Gyroscope Industry" seminar was held at the China Science and Technology Hall on the 26th. At the meeting, the integrated photonic gyroscope independently developed by Shenzhen Tongsheng Optoelectronics Co., Ltd. (hereinafter referred to as "Tongsheng Optoelectronics") made its global debut, marking a significant breakthrough in this field in China.
Tongsheng Optoelectronics is an innovative enterprise specializing in the research and development of photonic crystal fiber and optical sensing technology. It is also one of the earliest enterprises in China to develop photonic crystal fiber and integrated optical device products. After nearly 10 years of technological accumulation, Tongsheng Optoelectronics has finally broken through the key process of photonic crystal fiber drawing, high-performance miniaturized fiber wrapping technology, integrated optical device design and processing technology, fiber optic gyroscope noise analysis and suppression technology, and successfully developed the world's first integrated photonic gyroscope.
As the next generation of high-performance microstructure fibers, photonic crystal fibers belong to China's trade protection technology and products. Compared with traditional panda fiber, photonic crystal fiber has stronger bending resistance and better temperature stability, and the impact of low-temperature stress and geomagnetic stress is significantly reduced. Tongsheng Optoelectronics has overcome many difficulties in the drawing process of photonic crystal fibers, such as design, loss, strength, size, fusion, etc., completely solving the miniaturization problem of using photonic crystal fibers to wind fibers. It has achieved a fiber ring diameter smaller than 20mm in diameter.
Compared with the technology of Tongsheng Optoelectronic Integrated Photonic Gyroscope, although Emcore Fiber Optic Gyroscope (developed in 2014) from the United States has also achieved the goal of low cost and miniaturization, it still adopts multiple welding and bonding methods, and the closed-loop gyroscope requires additional modulators, resulting in low integration; The sensing heads of the integrated chip gyroscope (developed in 2020 by KVH Company in the United States) and the miniature fiber optic gyroscope VG221 (developed in 2022) by Fizoptika Company in Russia are open-loop gyroscopes, with significant differences in accuracy, temperature stability, and scale factor compared to closed-loop gyroscopes. In addition, the above three technologies of fiber optic gyroscopes do not integrate Y-branch electro-optic modulators, which results in lower integration compared to the integrated photonic gyroscopes of Tongsheng Optoelectronics. Tongsheng Optoelectronics products have significant advantages.
Experts attending the meeting believe that Tongsheng Optoelectronics has overcome multiple technical difficulties in the development of integrated photonic gyroscopes, making contributions to China's leading position in the field of fiber optic gyroscopes.
Xu Donghua, an expert from the National Committee of Major Technical Equipment and President of the Institute of Mechanical Industry Economic Management, Zhao Jingcheng, Vice Chairman of the "Science and Technology Innovation China" Investment Consortium of the China Association for Science and Technology, Liu Juncheng, Director of the Navigation Optics and Inertial Navigation Department of China Shipbuilding Corporation, Yan Guizhen, an expert on inertial MEMS sensors and Professor of the Institute of Microelectronics at Peking University, Yang Gongliu, Professor of the Institute of Advanced Technology at Zhejiang University, and Liu Yange, Professor of the Institute of Modern Optics at Nankai University, Li Chao, a researcher from the Fiber Optic Inertia Research Laboratory of the Chinese Academy of Astronautics and Astronautics, and other senior industry experts attended the meeting.
Editor: Guo Xinghua
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This article is reprinted from: Xinhua Finance and Economics
