Reporter Sun Yafei.
Correspondent: Shang He, Zhao Wenjia.
How does a bowl-thick fiber preform become an optical fiber thinner than a human hair?
On December 8, the reporter came to Shandong Pacific Optical Fiber Cable *** Optical Fiber Drawing Tower, and witnessed that with the blessing of science and technology, the optical fiber preform was drawn into filaments in a high-temperature environment, turning into a "sharp weapon" for data transmission.
The core diameter of an optical fiber is thinner than a human hair, only a few microns. Gao Xianwu, the person in charge of Shandong Pacific Optical Fiber and Cable, said that this seemingly simple process from thick to fine actually has a very high technical content. Shandong Pacific Optical Fiber & Cable is a high-tech enterprise integrating R&D, production, sales and service of optical rods, optical fibers, optical cables, optical cables, active optical chips, etc., and its optical cable products are widely used in high-end electrical appliances, high-speed rail, aviation, nuclear power and other fields, "especially the company's new ultra-low loss g."654.e-optical fiber R&D and application project, the overall technology has reached the international advanced level. ”
As one of the important infrastructures of the digital economy, optical fiber and cable are regarded as the "blood vessels of the digital economy". In the high-speed development of the information superhighway, optical fiber is like a passage for vehicles. The higher the rate and the larger the capacity of optical fiber transmission, the faster and more stable the quality of information transmission. Focusing on the optical fiber and cable industry, Yanggu County has broken the traditional business model of "fighting alone" of enterprises, connecting the dots and weaving wires into a network, creating a distinctive railway transmission equipment industry cluster.
In China Railway Beisai Electrician, a small standardized production workshop attracted the attention of reporters. "The world's only large-scale application of high-strength and high-conductivity copper-chromium-zirconium alloy contact wire products in high-speed rail catenary systems of 380km h and above is completed in this workshop. Zhang Jian, the person in charge of the company, told reporters that the catenary wire is known as the "crown jewel of the catenary system" of high-speed rail. The faster the speed of the high-speed rail, the higher the requirements for the conductor.
The thin high-strength and high-conductivity copper-chromium-zirconium alloy contact wire developed by us has reached the world's top level, which is irreplaceable, and has set a record of 486 for China's high-speed railThe world's highest operating speed of 1 km h has made great contributions. Zhang Jian said that since its establishment, the company has produced and supplied nearly 100,000 tons, and its products are all over China's "eight vertical and eight horizontal" high-speed rail lines and subway projects in 42 cities across the country.
Zhang Tao, director of the Yanggu County Bureau of Industry and Information Technology, told reporters that the Yanggu Railway Transmission Equipment Industry Cluster has more than 800 main enterprises, including 43 enterprises above designated size. The total output value of the cluster in 2022 will be 29 billion yuan, and the output value of leading industries will grow by 2075%。
Behind the rapid development is the continuous exploration of scientific and technological innovation by the cluster. Up to now, the cluster has built 3 self-built postdoctoral research workstations, 2 academician workstations, cultivated 6 national innovation platforms, obtained 55 core technology invention patents, cultivated 4 national-level "specialized, special and new" little giants, 1 national public service demonstration platform for small and medium-sized enterprises, 4 provincial-level quality benchmarking enterprises, 12 "gazelle enterprises", and 75 provincial-level "specialized, special and new" enterprises.
We are also actively engaged in the recruitment of high-end talents in the cluster. At present, the cluster has introduced 2 academicians of the Chinese Academy of Sciences and the Chinese Academy of Sciences, 1 foreign academician and 3 foreign experts1 self-declared national overseas high-level talent plan and 9 Taishan industry leading talents. Zhang Tao said that with the support of talents, Yanggu County optical cable, medium and high voltage cables, waterproof cables and other special cable product manufacturers are also in the forefront of various subdivisions.