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The industrialization of our country optical fiber preform technology progress

by:AAA     2020-04-25
( Industry news] The industrialization of our country optical fiber preform technology progress chenyl P can see from the information field in recent years, academic discussion, fiber to the home ( FTTH技术) Not only is the developed countries and developing countries, including China a developing trend of communication business. The increasing demand for broadband interactive network information, the United States there are thousands of home users realize the optical fiber to the home, is expected in the next five years on investment in terms of optical fiber cable will reach ~ $. Will strive for to year thousands of families realize optical fiber to the home. Japan has thousands of families in years for optical fiber to the home, a nationwide fiber to the home rate is. %, the level of optical fiber to the home rate range is up to. %, predicts years, Japan will have thousands of families for optical fiber to the home. The estimated years or longer after can achieve scale construction. At present, China's broadband access is given priority to with ADSL, HFC development part, the construction of the optical fiber to the home in the stage of a trial network. Experts estimate that China's construction of optical fiber to the home is about kilometers fiber, market potential is very attractive. Side is fierce international competition, optical fiber cable industry side is inviting the domestic market of optical fiber, the industrialization of our country optical fiber preform technology is a breakthrough, the long-term dependence on imported optical fiber preform adverse situation will be improved. News from China's science and technology: (date) (month) (year), '15' national science and technology research plan 'PCVD big size low water peak single-mode optical fiber preform manufacturing technology development' and 'industrialization of total synthesis optical fiber preform technology' subject passed experts acceptance. 'PCVD big size low water peak single-mode optical fiber preform manufacturing technology development' project, using the unique advantages of the PCVD process, on the basis of the traditional method of casing process test the new casing vacuum wire drawing process, the method of optical fiber preform manufacturing has breakthrough tube size limit. High performance characteristics of this new process combines PCVD optical fiber and the low cost advantage, OVD techniques to ensure that fiber has excellent performance at the same time, greatly reduce the optical fiber manufacturing costs. Successful development of large size larger than mm in diameter, low water peak single-mode optical fiber preform single rod wire length more than km. Industrialization 'fully synthetic large-sized optical fiber preform technology' project, the sedimentary process using computer simulation technology research preform medium pressure field and temperature field distribution of key production equipment, successfully developed with independent intellectual property rights of new type high efficient multiple tube burner, and design can develop accurate control core cladding optical fiber preform geometry size and the refractive index distribution of depositional system, to increase the deposition efficiency by % of rods to %. With laser control system at the same time, greatly improving the mandrel axial stability, thus successfully mastered the production technology of large size optical fiber preform. At present, have produced mm in diameter and length, mm optical fiber preform preform km above fiber can be obtained a drawing. Fully synthetic technology, large size optical fiber preform with high deposition rate of rods ( Up to g/min) , geometry size stability, low requirements for raw material gas purity and can realize the localization of all raw materials, the production cost, effectively control the preform has greatly enhanced the product market competition. The above two major scientific research achievements show that China has mastered the low water peak fiber core mandrel and a variety of optical fiber preform technology, changed the long-term dependence on imports of optical fiber preform, laid a solid foundation for the healthy development of fiber industry in China. Years of national conference on science and technology is put forward, you must insist on the improving self-directed innovation capability in the prominent position, greatly enhance the national competitiveness. Independent innovation ability is the core of national competitiveness, is China's response to the challenges of the future big choices, is at the head of the science and technology in our country in the future development strategy of the main line, is the basic way to realize the target to build an innovation-oriented country. The development of world science and technology practice tells us: a country only has a strong capacity for independent innovation, to grasp the initiative in the fierce international competition, to win the initiative. Especially in the relationship between key sectors of the national economy and national security, the real core technology, key technology is can't buy, must rely on independent innovation. To improve the independent innovation ability in the first of all work of science and technology, to master a number of core technology in a number of important areas, has a group of independent intellectual property rights, bring up a batch of internationally competitive enterprises, greatly enhance the national competitiveness. Wen stressed that to promote the development of science and technology in our country, to focus on five strategic focus: one is the development of energy, water and environmental protection technology in priority. The second is to grasp the core technology of information industry of equipment manufacturing industry and independent intellectual property rights, as a breakthrough point to promote China's industrial competitiveness. Three is the biological technology as the focus of the future high technology industry to catch up. Four is to speed up the development of empty days and Marine technology. Fifth, strengthen basic science and research in cutting-edge technologies. In this paper, the two results, it is confusing for many years one of the core technology of information industry of our country. Science and technology conference with years of time to make our country into an innovative country, this is a very heavy and arduous task, is also a very extensive and profound social change. Experts estimate that the years or longer, symbolizing the information level of the optical fiber to the home ( FTTH技术) Can realize scale construction. Our country already have low water peak fiber core mandrel and a variety of optical fiber preform technology will play a role of main force.
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